Weil-McLain Gold CGi Series 2 User Manual page 49

Boiler Manual
11c
Troubleshooting —
— Usually indicates reversed 120 VAC polarity if
Electrical shock hazard — Wherever you see
instructions could result in severe personal injury, death or substantial property damage.
Is
POWER
No
Is
POWER
Flashing
alone
TSTAT CIRC
light flashing
PRESS SWITCH
light flashing
FLAME
light flashing
For insufficient heat or no heat problem, go to
Chart 7 if POWER
light flashing.
• Usually indicates polarity on incoming 120 VAC power
line is wrong.
▲TURN OFF POWER▲
•
then reverse the HOT and NEUTRAL wires entering the
boiler in the J-box.
• Restore POWER at service switch or breaker.
Is POWER
No
Boiler should now
operate normally.
Part Number 550-110-710/0200
CHART 1— Troubleshooting POWER light status
light off?
Yes
light ...
Flashing with On steady
another light (not flashing)
Chart
2
Chart Chart
3 5
Chart Chart
4 6
light is on steady, with no other
at service switch or breaker,
light flashing now?
Yes
Have system checked by a
licensed electrician. If
problem persists, call your
local Weil-McLain sales
representative.
control module lights
POWER light flashes by itself —
▲TURN OFF
POWER▲, follow the instructions. Failure to follow
• Make sure service switch or circuit breaker is on or
fuses are good.
• Remove 120 VAC IN plug (Figure 38, Item 3, page
48) on control module.
• Using voltmeter, check across top and bottom pins of
120 VAC IN plug.
Does voltmeter indicate 120 VAC ?
No
Problem is with incoming
electricity. Have licensed
electrician repair circuit.
• Reconnect 120 VAC IN plug.
• Remove 120 VAC IN transformer PRIMARY plug
(Figure 38, Item 2, page 48) on control module.
• Using voltmeter, check across top and bottom pins of
PRIMARY receptacle.
Does voltmeter indicate 120 VAC ?
No
Replace control module.
Retest.
• Reinstall 120 VAC transformer PRIMARY plug.
• Remove 24 VAC transformer plug (Figure 38, Item 5,
page 48) on control module.
• Using voltmeter, check pins of plug.
Does voltmeter indicate 24 VAC ?
No
Replace transformer.
Retest and check for back
feed of voltage from
system wiring.
Yes
Yes
Yes
Replace control module.
Retest.
49