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Part number 550-141-850/069974
GOLD GV Water boiler series 3 — manualGOLD GV Water boiler series 3 — manual
GOLD GV Water boiler series 3 — manualGOLD GV Water boiler series 3 — manual
GOLD GV Water boiler series 3 — manual
Troubleshooting — GCM lightsXIg
CHART 1
— Troubleshooting
POWER
light status
Electrical shock hazard — Wherever you see
▲
TURN OFF POWER
▲
, follow the instructions. Failure to follow
instructions could result in severe personal injury, death or substantial property damage.
Problem is with incoming
electricity. Have licensed
electrician repair circuit.
Replace control module.
Retest.
Replace transformer.
Retest.
Replace control module.
Retest.
Boiler should now
operate normally.
Have system checked by a
licensed electrician.
If problem persists, call your
local Weil-McLain sales
representative.
• Make sure service switch or circuit breaker is on or fuses
are good.
• Remove
120 VAC IN
plug (
Figure 34, Item 1
) on control
module.
• Using voltmeter, check across top and bottom pins of
120 VAC IN
receptacle.
Does voltmeter indicate
120 VAC
?
No Yes
• Reconnect
120 VAC IN
plug.
• Remove
120 VAC
transformer
PRIMARY
plug (
Figure
34, Item 2
) on control module.
• Using voltmeter, check across top and bottom pins of
PRIMARY
receptacle.
Does voltmeter indicate
120 VAC
?
No Yes
• Reinstall
120 VAC
transformer
PRIMARY
plug.
• Remove
24 VAC
transformer plug (
Figure 34, Item 7
) on
control module.
• Using voltmeter, check across pins of receptacle.
Does voltmeter indicate
24 VAC
?
No Yes
Chart 2 Chart 6
TSTAT CIRC
light flashing
Chart 3 Chart 7
LIMIT
light flashing
Chart 4
PRES SWITCH
light flashing
Chart 5
FLAME
light flashing
For insufficient heat or no heat problem, go to
Chart 8
if
POWER
light is on steady, with no other
light flashing.
• Usually indicates polarity on incoming
120 VAC
power
line is wrong.
•
▲
TURN OFF POWER
▲
at service switch or breaker,
then reverse the HOT and NEUTRAL wires entering the
boiler in the J-box.
• Restore
POWER
at service switch or breaker.
Is
POWER
light flashing now?
No Yes
Is
POWER
light...
Flashing
alone
Flashing with
another light
On steady
(not flashing)
No Yes
Is
POWER
light off?