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Part number 550-141-850/069978
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 lights (continued)XIg
CHART 5
—
FLAME & POWER
lights flashing
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.
• Boiler should now operate normally.
• Original flashing
FLAME
light caused by igniter not
operating properly.
• See normal sequence of operation, Figure 22.
• Open manual gas valve.
• Restart boiler, following
Lighting instructions
for gas
valve installed on boiler (Figure 25 or 26).
• Check for proper operation (per Sequence of operation,
Figure 22).
• Boiler should now operate normally.
• Original flashing
FLAME
light caused by gas valve not
operating properly.
• See normal sequence of operation, Figure 22.
Call your local Weil-McLain
sales representative.
• Check and/or replace gas valve.
• Recycle boiler by thermostat or service switch.
Thermostat should call for heat and appropriate zone
valves close.
• Wait 5 minutes.
Are
FLAME
&
POWER
lights flashing?
No Yes
• Check and/or replace igniter.
• Recycle boiler by thermostat or service switch.
Thermostat should call for heat and appropriate zone
valves close.
• Wait 5 minutes.
Are
FLAME
&
POWER
lights flashing?
No Yes
• Check gas valve harness wires and check for tight wiring
connections on gas valve and control module. Repair/
replace as necessary.
• Recycle boiler by thermostat or service switch (holding
power off for at least 45 seconds).
• Thermostat should call for heat and appropriate zone
valves close.
During step 5 of sequence of operation (Figure 22),
is there
24 VAC
across gas valve terminals?
No Yes
Are manual main shutoff valve and gas valve turned on?
No Yes
Replace control module.
Retest.