I pg 40
Turbotemp 125 Pool and Spa Heater Installation and User’s Guide
TROUBLESHOOTING INSTRUCTION
Initial Troubleshooting
Only qualified, trained service technicians with appropriate test equipment should service
the heater. Remember that all parts of the system affect heater operation. Before starting this
troubleshooting procedure, make sure that the pump is running correctly, that there are no
blockages in the system, that the valves are correctly set and that the time clock is correctly
set and is running.
IMPORTANT! READ ME FIRST!
NOTICE:
Installing the black 120 volt plug in the
control box and then connecting the heater to a
240 volt line will destroy the trans - former, control
broad, and ignition control module, and will void the
warranty. If you install the red 240 volt plug and then
connect the heater to a 120 volt line, the heater will
not operate.
READ THE FOLLOWINGCAREFULLY:
1. Check the line voltage to your heater. This heater
will operate on either 120 Volts AC or 240 Volts AC.
2. Remove the covers and check the 12-pin plug in
the back of the control box. The plug must match the
voltage in the heater circuit.
3. If the 12-pin plug is not plugged into the back of
the control box, select the correct plug from the bag
in the control box and plug it in. The BLACK plug is
for 120 volts, the RED plug is for 240 volts.
Start here for directions to specific Troubleshooting Chart
Hazardous voltage. Can shock, burn or kill.
Disconnect power before servicing any components.
Do not jumper
switch terminals to remedy a failed safety switch.
WARNING
WARNING
Go to chart “HEATER WILL
NOT FIRE - A”
(Page 28)
Go to chart “HEATER WILL
NOT FIRE - B”
(Page 29)
Go to specific safety switch
troubleshooting chart
(Pages 30 and 31)
Go to chart ‘HEATER WILL
NOT FIRE -C”
(Page 30)
Are any red diagnos-
tic LED’s on back of
board (AGS, AFS,
SFS, HLS, PS or
THERMISTOR) “on”
NO
NO
NO
NO
NO
YES
YES
YES
NO
YES
YES
Does red “SERVICE
HEATER” LED come
“on”
Verify that water temperature setting is
above water temperature reading. If it is,
and heater either will not fire or no red
LED’s come “on”, replace Control Board.
YES
Is green “POOL” or “SPA”
LED “on”?
Is red “SERVICE SYSTEM”
LED “on”?
Is red “SERVICE HEATER”
LED “on”?
Turn off power to heater for
about 5 seconds, and turn
back on. Make sure tempera-
ture setting is above water
temperature. Wait one minute.
Do any diagnostic LED’s on
back of board (AGS, AFS,
SFS, HLS, PS, or
THERMISTOR) come “on”
and stay on?
NOTICE:
Any or all of the diag-
nostic LED’s may come “on”
momentarily when you turn on
the power to the heater.
Fire and Explosion hazard.
Heater Will Not Fire - A
Heater Will Not Fire - A
Start
GO TO
“HEATER WILL NOT FIRE - B”
Page 29
Heater should fire on demand
for heat.
Check Fireman’s Switch circuit
connections (time clock, wiring,
external controller relay).
Remove jumper. Check wiring
between Transformer and J7
terminals on Control Board
and between J7 and
Fireman’s Switch on Terminal
Board, check fuse, and
restore continuity.
Restore power to heater.
Replace Transformer.
Heater should fire on
demand for heat.
Replace Control Board.
Replace Membrane Pad.
Check wiring connections
between power supply and
Junction Box and between
Junction Box and Terminal
Board; restore continuity.
Check wiring connections
between Terminal Board and
Transformer primary and
restore continuity.
Is green “SPA” or
“POOL” LED “on”
YES
NO
NO
YES
YES
YES
NO
NO
Press
“POOL” or “SPA” ON
button on Membrane Pad.
Does “POOL” or “SPA” LED
come on?
Check for line voltage to
heater.
Check for 24 VAC at
secondary Transformer
Check for Line Voltage at
Transformer primary pins.
White connects to Pin 3 on
Transformer, Black to Pin 2,
Orange to Pin 1.
240V: check Pin1 to Pin 3.
120V: check Pin 2 to Pin 3.
Jumper Fireman’s Switch at
Terminal Board and depress
“POOL” or “SPA” ON button on
membrane pad. Does “SPA” or
“POOL” LED come “on”?
Leaving jumper in place,
check for 24 VAC between
Fireman’s Switch terminals
and ground.
Jumper pins 6 and 5 on J6 of
Control Board. Does “SPA”
LED come on?
Jumper pins 6 and 4 on J6 of
Control Board. Does “POOL”
LED come on?
Check for Line Voltage
between L1 and L2 terminals
on Terminal Board.
NO
YES
NO
NO
YES
YES
YES
YES
YES
NO
NO
YES
NO
Check that correct 12-pin
plug is installed (red is
240V, black is 120V)
If plug is not installed:
Install correct plug.
240V plug in 120V
circuit: Replace with
correct plug.
120V plug in 240V
circuit: Replace trans-
former, control board,
and ignition control
module (see “HEATER
WILL NOT FIRE-C and
-D”, Pages 30 and 31).
Check fuse and all
other 24V components
for damage.
Remove jumper. Check ribbon
cable connection between
Membrane Pad and J6 on
Control Board. Depress
“POOL” or “SPA” On pad
again. Does “POOL” or “SPA”
LED come on?
NO