Full Text Searchable PDF User Manual
G&F Manufacturing
Service Manual
Version 2.0
April 2010
Any tech working on these units must read this manual. Any
questions, please call service department from the job site.
954-318-6900
Topics
Page
•
Introduction to 410a
3
• Sequence of operation
4
• Control Board Operation
4
• Control Board Service Menu
4
• Service menu options
4
Language Select
4
Remote T-Stat
5
Pool Heat/Cool
5
Pool- Cool
5
Solar Control
5
Time Delay
5
Spa Timer
5
Even Heat
6
Temperature Scale
6
Defrost Mode
6
Evap Temp Calibration
6
Water Temperature Calibration
6
Load Defaults
6
Board Diagnostic
6
No Flow
6
Defrost
6
Low Refrigerant Pressure
7
Water Flow Lockout
7
Evaporator Sensor Malfunction
7
Water Sensor Malfunction
7
Components of Service
8
Charge
8
Thermal Expansion Valve
8
Compressor
8
Fan
8
Remove and Replace Parts
9
R&R Compressor
9
R&R TXV and/or Filter Dryer
10
R&R Heat Exchanger
10
R&R Water Temperature Sensor
10
R&R Defrost/ Evaporator Sensor
12
R&R Water Pressure Switch
12
R&R Hi/ Low Pressure Switch
12
R&R Control Board
12
Installation of Heat Pump
13
Direction Placement
13
Air Flow Direction
13
Electrical Diagram
14
Table of Content
WARNING:
Only certified service providers to work on unit. Anyone else will void warranty.
Only put your refrigerant gauges on these units as a last resort.
It is a package unit that has had many steps taken at the factory to assure the system is
contaminant free. Almost all problems can be diagnosed without the use of gauges.
WARNING:
Turn off all electrical power to unit before servicing
Check to see that the unit is bonded and that the electric conduit is connected to the electrical
box inside the unit.
ATTENTION
:
If you find that it is mis-plumbed, un-bonded, etc. contact the warranty department and let
them handle it.
Do not bad mouth an installation!
Attention, Warning, and Caution boxes have been place through out this
manual to help point out important information to look out for.
Attention
- Points out important information to be aware of
Warning
- Indicates an action that might void warranty
Caution
- Alerts service or user regarding safety issues.
Page 3
Introduction
This manual was put together to introduce you to G&F Manufacturing’s
new R-410A Swimming Pool Heat Pump. Please read the manual before
you begin to service unit. If you have any questions, we have a
dedicated service department to help you.
Sequence of Operation
In order to properly diagnose a problem you must understand the sequence of operation.
When the pool pump comes on and the water flows through the heater, the water pressure
closes the normally open pressure switch. When the switch closes, the control board then
checks the thermostat to see if the pool water temp is below the board set point. If it is, it
checks the normally closed high and low pressure switches. If both are closed it will then
send 24v to the compressor/ fan contactor and the unit will start to heat or cool, depending on
unit and mode.
Note: There is a 5-minute delay on make timer built into the control board so it will
have a delay before starting.
Control Board Operation
The control board has an “LCD” display and was kept as simple as possible for ease of
customer use, to minimize nuisance-programming calls, and to be able to handle most
scenarios found in the field.
The board will display which mode it is in (Pool Heat, Spa Heat). Simply raise or lower temp
by pushing the Up or Down arrows. To switch modes simply push the “Mode” button to
toggle from pool to spa. For Pool Cool, there will be a Heat / Cool setting in the service
menu. We also added Auto Feature so you may set temp at max temp and min temp, and
board will automatically heat or cool the pool/spa. The board also has the capability to
control your solar system.
Control Board Hidden Menu
All options and calibrations are in a hidden menu. To access the hidden menu press and hold
both up and down arrows simultaneously until first option appears on display. The board will
also rest to Pool/Spa heat screen after 20 seconds of no activity.
Control Board Options
Use “Mode” Button To Toggle Through Options
1
st
Option: Language Select (English)
(Options are: English, Spanish, French, Portuguese, German) Use arrows to toggle to
selection, English is set as default.
Page 4
ATTENTION
:
You will find the Pool/Spa remote is no longer necessary; the board is programmed to
automatically recognize the switch and self-program.
2
nd
Option: Remote T- Stat (Disable)
This option is used for external controller systems with its own thermostat such as an
Aqua logic
!
or Aqua link
!
. Default is disabled. To enable, push Up or Down arrows
until display says “Enable.”
3
rd
Option: Pool Heat/Cool (Disable)
Once this is enabled a Heat/ Cool setting will come up on display. The board will
recognize when the temp of the pool has raise or dropped by 1˚ and will heat or cool
the pool until it reaches set point again.
(This option is only for Heat/Cool units.)
4
th
Option: Pool – Cool (Disable)
Once this option is enabled, it will give you a pool cool mode on display, use “Mode”
buttonto toggle (
This option is only for Heat/Cool units.)
5
th
Option: Solar Control (Disable)
This option allows your pool heater (with additional wiring) to monitor the pool solar
system’s performance and will automatically control the temperature.
6
th
Option: Time Delay (5)
Default is 5 minutes. You may temporarily set to 0 for service purposes, unit will reset
to 5 Mins after 10 Mins have passed.
7
th
Option: Spa Timer (Continuous)
This option is for rental properties or homeowners who do not want the spa left on
indefinitely. Options are “Continuous”, “Off”, or “Up to 20 hours” in 15-minute
increments.
CAUTION:
“Off” will not allow spa to run.
Page 5
8
th
Option: Even Heat (Disabled)
Will periodically turn pool pump on according to delay setting. Options are: Off, 0 Hr
(for testing), 1 Hr, 2 Hr, 3 Hr, 4 Hr, Default is off
9
th
Option: Temperature scale (F)
Sets display for Centigrade or Fahrenheit. Use arrows to toggle.
10
th
Option: Defrost Mode (Air Defrost)
Options are Air Defrost and Reverse Cycle. This option is set at the factory.
11
th
Option: Evaporator Temperature Calibration
For calibrating the defrost sensor located on the suction line. If this calibration is
changed it will show by how much in plus or minus at bottom of display.
12
th
Option:
Water Temperature Calibration
This option is for calibrating the water temperature sensor and will show the amount of
calibration in plus or minus at the bottom of display.
13
th
Option:
Load Defaults
In this mode you can reload all defaults by pressing the up arrow once.
Board Diagnostics
The control board will alert you to most problems.
DISPLAY MESSAGES
No Flow
Means the water pressure switch is not closed. Check water flow to heater. Make sure any
water bypass valves are not redirecting water around heater, filter is clean, pump is on, and
water level in pool is up in the middle of the pool tile, this prevents skimmer from sucking air
Defrosting
Means the suction line has dropped to 28 degrees. It will shut the unit down until it reaches
40 degrees and the system will run again.
Page 6
Low Refrigerant Pressure
Low pressure cut out is 37 pounds cut in is 80 pounds. Unless the defrost sensor is way out of
calibration, you should never see this code because of low ambient temperatures. You should
only see this code if there is a refrigerant leak. Find and repair the leak.
Water Flow Lockout
High Refrigerant pressure is 540 cut in is 360. This error code is almost always a lack of
water flow, so check everything under “No Flow” before putting on gauges or condemning
High Pressure switch.
Evaporator Sensor Malfunction
This is a 10k sensor. If it is open or outside its range you’ll get this error. Check connections
before replacing.
Water Sensor Malfunction
This is also a 10k sensor. If it is open or outside of its range you’ll get this error. Check
connections before replacing.
ATTENTION
:
This is a standard refrigeration system and most diagnostics are the same as air conditioners.
However, you must keep in mind that the Heat Exchanger is the condenser and the large air
coil around unit is the evaporator. The system consists of a compressor, water-cooled
condenser, TXV, and air heated evaporator.
ATTENTION
:
Diagnosing the refrigeration system is something all A/C technicians should know. However,
there are a few points we would like to point out.
Page 7
Charge
The system holds 4 pounds for Turbotec R-410A unit, because the sub cooling & super heat
vary greatly with air and water temperature. For field charging we use a condensing
temperature of 24 degrees. After power is on and water has been running through unit for at
least 5 minutes your high side temperature should be 24 degrees above water temperature.
Read on control board. Unless the ambient temperature is less than 62 degrees, we expect a
superheat of at least 15 degrees. You may read the suction line temperature by pushing and
holding the “Up” arrow on control board. After about 15 seconds, the board will display
suction line temperature, the board will read Evap and a temp. Please wait for at least 10
minutes run time before checking superheat.
ATTENTION:
Check temperature on both sides of filter. If more than 2 degrees different
the filter is clogged.
TXV (Thermal Expansion Valve)
All units are manufactured with adjustable TXV’s. If you suspect the TXV needs to be
adjusted, please call 954-318-6900 from the jobsite and technical support will walk through it
with you.
Compressor
Broken valves, shafts, (not pumping) and shorted to ground are obvious problems. However,
no starts are commonly misdiagnosed. Check the capacitor for correct MFD’s. Check
connections, voltage and open windings. If open windings, check to see if compressor is hot.
If so, let it cool down, or run cool water over it before condemning. Check Ohm’s: common
to run and common to start should equal run to start. If everything above is correct, then add
hard start to capacitor.
Fan
Please check connections and capacitor before condemning fan motor. If you do have to
change fan motor ALWAYS change capacitor also.
Page 8
Remove and Replace Parts
ATTENTION:
Although the components of this system are the product of an engineer, the design of the unit
was created by a service technician of 35 years. Therefore, wherever possible, the unit was
put together with
ease of service in mind
. Time is important to both your company and ours
so when replacing refrigerant components please start with recovering refrigerant, and then
move on to disconnecting component.
R&R Compressor
Turn power to unit off. Start recovery of refrigerant.
Remove the 4 screws holding the top on unit.
Cut wire tie on fan wire bundle outside of the control box.
Lift top of unit, flip over and stand on end next to unit.
Bleed run capacitor.
Remove wires from compressor (Note: colors and positions)
Unbolt compressor from base.
Remove TXV bulb from suction line.
When recovery is done cut out filter.
Unsolder compressor and move through top.
Solder in new Filter/ Dryer. Solder in compressor.
Pressurize system and check for leaks.
Start evacuation.
Rebolt compressor to base.
Rewire compressor and reinstall wire cover.
Reinstall TXV bulb.
Put top back on unit and rescreen.
Change Capacitor once system has reached 500 microns of vacuum then charge system to.
Turn power back on and check unit operation.
Reinstall front cover.
Page
R&R TXV and/ or Filter
Turn off power. Start refrigerant recovery.
Remove 4 screws holding top on unit.
Cut wire tie holding fan wires bundled at side of control box.
Lift top off, flip over and lay on end next to unit.
After recovery has finished remove component from system.
Replace with new filter/ dryer.
Solder in new component.
Leak check, start vacuum.
Replace top on unit.
After vacuum has reached 500 microns, charge system to 4 lbs of R-410A for Turbotec
Titanium unit,
Start unit and check operation. Replace front cover.
R&R Heat Exchanger
Turn off power. Start recovery of refrigerant.
Cut wire tie holding fan wires bundled next to control box.
Remove 4 screws holding top on unit.
Lift top off, flip top over and lay on end next to unit.
Cut or break female half of unions off back of unit.
Cut wire ties holding PVC ells to bottom of base.
When recovery is complete cut refrigerant filter out.
Unsolder and remove heat exchanger through top of unit.
Set new heat exchanger in base of unit.
Solder in heat exchanger.
Start system on vacuum.
Rebolt heat exchanger to base.
Restrap PVC ells to bottom of unit and glue on new female half of unions. Reinstall top.
After system has reached 500 microns of vacuum, charge system to 4 pounds R-410A.
Turn power on, check system operation, and reinstall front cover.
ATTENTION:
Always cut the filter out, DO NOT UNBRAZE.
Page 10
R&R Fan Motor
Turn off power. Remove front cover.
Disconnect fan wires from contactor, capacitor and ground.
Remove strain relief bushing and holding wires where they penetrate control box.
Feed wires out of control box.
Cut wire ties holding wires in a bundle.
Remove plastic fan motor cap from fan guard.
Remove 4 screws holding top on unit and remove top.
Flip top over and lay on ground or on level surface.
Loosen setscrew and then remove fan blade.
Lift one side of top up to a 45 degree angle and remove 4 nuts holding fan motor to fan
guard.
Lay top back down and remove motor.
Reverse procedure to install new motor.
Be sure to reinstall strain relief bushing where wires penetrate control box and replace fan
motor capacitor.
WARNING:
DO NOT Cut old WTS wire and splice in new WTS
R&R Water Temp Sensor
Turn off power. Remove front cover.
Unscrew water temp sensor (WTS) and take out. Screw in new WTS.
Take old WTS spade clips off of the back of the board.
Place new spade clip in same slot.
Close HP up.
ATTENTION:
The water temp probe is located on the lower water inlet elbow and is unserviceable.
Therefore when it’s necessary to replace probe, drill a 3/8 hole in upper elbow and install
new probe there. After it’s installed, wrap it once with cork tape then with closed cell
insulation, then again with cork tape.
Page 11
R&R Defrost Sensor
Turn off power. Remove front cover.
Disconnect connectors from T-7 and T-8 on control board.
Remove strain relief bushing where wires penetrate side of control box and feed sensor wires
out of control box.
On the suction line cut the cork tape and peel back exposing TXV bulb and strap.
Loosen strap and slide old sensor out.
Reverse procedure to reinstall being sure to reinsulate and reinstall strain relief bushing.
R&R Water Pressure Switch
Turn off power. Turn off water. Remove front cover.
Remove wires from pressure switch.
Remove 2 screws holding control box back to coil on right side of control box.
Bend control box enough to get to back of flow switch.
Cut tubing as close to flow switch as possible.
Remove 1/2” nut holding flow switch to control box.
Install new switch and reverse procedure.
R&R High or Low Pressure Switch
Turn off power. Remove front cover.
Cut high-pressure switch wires near switch.
Unscrew HP switch using back up wrench.
Use leak lock when reinstalling switch.
Remove strain relief bushing where wires penetrate control box.
Feed old HP switch wires out and new HP switch wires in.
Reinstall strain relief bushing.
Install spades at HP terminals on control board. Start and check unit operation.
Reinstall front cover.
R&R Control Board
Turn off power. Remove front cover.
Loosen 4 screws holding control board to cover.
Remove control board and let hang on wires.
Push 4 screws through board and install new board.
Remove wires from old board and install on new board one at a time, being sure to place
wires from same terminals from old board to new board as you are taking them off.
Turn power on. Start unit, check operation, and reinstall front cover.
Page 12
Installation
ATTENTION
:
Before installing this heater there are several things to consider for performance,
serviceability and warranty.
Direction of Placement:
Access panel should always face out away from wall. If you must face the service panel
toward the wall, leave a minimum of 24” between the wall and the unit.
ATTENTION
:
You will not have a happy customer if they have to squeeze between the wall and the heater
to use the controller.
Placement:
Airflow is critical to the performance and efficiency of a heater, therefore leave as much
space around and above heater as possible. Installations under palm trees, inside screened
porches etc. may help hide unit but will drastically reduce the performance of the unit. You
will not have a happy customer. The unions were to the side of the unit to keep pipes out of
the way of the control panel so that they are not stepped on while adjusting controls or
WARNING:
Do not plumb the pipes back around front where pipes will be stepped on,
or prohibit access to the front panel.
Make sure unit is bonded and conduit is connected all the way up to the control box.
ATTENTION
:
For a more detailed installation manual, please visit our website
Gulfstreamheatpump.com
,
and the manual will be there for you to download. If no internet access, call service
department
954-318-6900
and we will fax or mail a copy to you.
Page 13
Page 14
Bill of Materials
Page 15
DRAWING
NO.
COMPONENT DESCRIPTION
PART NO.
1
COMPRESSOR PLUG
1001001
2
FAN MOTOR, 2/5HP, 825 RPM
1001002
3
CONTROL
1001003
4
TEMP SENSOR, SUCTION
1001004
5
TEMP SENSOR, WATER
1001005
6
CONTACTOR, 2 POLE, 40A
1001006
7
TRANSFORMER, 40VA
1001007
8
CAPACITOR, 80UF, 370V
1001028
9
CAPACITOR, 7.5UF, 370V
1001009
10
PRESSURE SWITCH, HIGH, 540
1001054
11
PRESSURE SWITCH, LOW, 37
1001055
12
WATER PRESSURE SWITCH
1001012
13
TOP COVER
3003014
14
BASE PAN
3003013
15
FRONT PANEL
3003015
16
TOP CAP
3003033
17
ELECTRICAL BOX
3003017
18
FAN BLADE, 3P24CCW36
6006001
19
FAN GUARD
6006008
20
EVAP GUARD, 32 X 86
6006009
21
2" S-S UNION #200-100
7007023
22
EVAPORATOR, 32 X 84
8008078
23
FILTER/DRIER
8008052
24
TXV
8008081
25
CONDENSER, TI
8008084
26
COMPRESSOR, HLH061T1LP6
8008098
10K Sensor Ohms Chart
F
OHM
F
OHM
F
OHM
F
OHM
F
OHM
20
46225
40
26100
60
15310
80
9297
100
5827
21
44879
41
25391
61
14921
81
9076
101
5697
22
43577
42
24704
62
14543
82
8861
102
5570
23
42318
43
24037
63
14176
83
8651
103
5446
24
41099
44
23391
64
13820
84
8447
104
5326
25
39919
45
22764
65
13473
85
8249
105
5208
26
38777
46
22156
66
13136
86
8056
106
5094
27
37671
47
21566
67
1209
87
7867
107
4982
28
36601
48
20993
68
12491
88
7684
108
4873
29
35565
49
20438
69
12182
89
7506
109
4767
30
34561
50
19900
70
11882
90
7333
110
4664
31
33590
51
19377
71
11589
91
7164
111
4563
32
32648
52
18870
72
11305
92
6999
112
4464
33
31737
53
18377
73
11029
93
6839
113
4368
34
30853
54
17899
74
10761
94
6683
114
4274
35
29998
55
17435
75
10500
95
6530
115
4183
36
29169
56
16985
76
10246
96
6382
116
4094
37
28365
57
16548
77
9999
97
6238
117
4007
38
27587
58
16123
78
9758
98
6097
118
3922
39
26832
59
15711
79
9525
99
5960
119
3839
Page 16
WARNING:
Using any company that is not certified by G&F Manufacturing will cause the
warranty on the unit to void.
SERVICE
All service must be handled by an Authorized Service Center. Warranty may be void if a non-
authorized service representative does service. Do not return the heater to your dealer, as they
do not provide service. Before calling for assistance or service, please check the Troubleshooting
section of this manual or call your dealer. This may save you the cost of a service call. If you still
need help, follow the instructions below.
!"#$%&"'&()'*"'+*,(%)"-'*.'&(//%)0'12'(,3''45678'9:;<=5>>'
When asking for help or service please provide a detailed description of the problem, your heater’s
complete serial number, the purchase date and dealer purchased from. This information will help
us respond properly to your request.
Keep a copy of the sales receipt showing the date of purchase.
Proof of purchase will assure you of in-warranty service.
MANUFACTURED BY:
G & F MANUFACTURING, INC.
7902 INTERSTATE COURT
NORTH FORT MYERS, FL 33917
Page 17