Weil-McLain EG 6 Series Manual page 30

EG / PEG 6
sEriEs
Troubleshooting – (EG water boilers)
– Spark-ignited pilot – Troubleshooting POWER light status
CHART 1
– Usually indicates reversed 120VAC polarity if Power light flashes by itself –
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.
Is POWER light off?
No
Is POWER light . . .
Flashing Flashing with
alone? another light?
TSTAT/CIRC
light flashing
DAMPER
light flashing
FLAME
light flashing
LWCO
light solid
For insufficient heat or no heat problem, go to
Chart 6, page 35, if Power light is on steady,
with no the light flashing.
• Usually indicates polarity on incoming 120VAC 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
Boiler should now operate
normally.
30
EGH 5
•
sEriEs Gas
Yes
On steady
(NOT flashing)?
Chart 2
Chart 3
Chart 4 Chart 5
Chart 7
Yes
Have system checked by a
licensed electrician.
If problem persists, call your
local Weil-McLain sales
representative.
- — C
firEd boilErs
• Make sure service switch or circuit breaker is on or fuses
are good.
• Remove 120VAC IN plug (Figure 15, Item 3, page 29) on
control module.
• Using voltmeter, check across top and bottom pins
of 120VAC IN plug.
Does voltmeter indicate 120VAC?
No
Problem is with incoming
electricity. Have licensed
electrician repair circuit.
• Reconnect 120VAC IN plug.
• Remove 120VAC transformer PRIMARY plug
(Figure 15, Item 3, page 29) on control module.
• Using voltmeter, check across top and bottom pins of
PRIMARY receptacle.
Does voltmeter indicate 120VAC?
No
• Replace control module.
• Retest.
• Reinstall 120VAC transformer PRIMARY plug.
• Remove 24VAC transformer plug (Figure 15, Item 3,
page 29) on control module.
• Using voltmeter, check across pins of receptacle.
Does voltmeter indicate 24VAC?
No
• Replace transformer.
• Retest.
s
ontrol uPPlEmEnt
continued
Yes
Yes
Yes
• Replace control module.
• Retest.
Part Number 550-142-304/1220