Weil-McLain Gold CGi Series 2 User Manual page 47

Boiler Manual
11b
Troubleshooting —
Control module
Solder or water
board can cause improper operation of control
module. Place a shield over the boiler internal controls
and components during installation. Failure to comply
could result in severe personal injury, death or
substantial property damage.
Make sure
diagram. Good grounding is extremely important for
proper operation.
Control indicator lights —
lockout modes
See
Charts 1
troubleshooting procedures.
To reset control after a lockout, turn off power at the 120 VAC
service switch or turn down all thermostats. Wait 45 seconds.
Then restore power or call for heat.
POWER
Usually indicates reversed polarity of 120 VAC power wires.
Figure 36 Manometer connections
White
Side
panel
Part Number 550-110-710/0200
splatter between plugs and circuit
is installed per wiring
ground wiring
through in this section for detailed
7
light flashing alone
Pressure
Suction
Inclined tube
manometer
White
Flue collector
Red
White
Red
Red
Interior panel
components
POWER and TSTAT CIRC
Usually indicates stray voltage on external thermostat circuit
wires (usually due to miswired 3-wire zone valve).
and
POWER PRESS SWITCH
Usually indicates pressure switch is closed when it should not
be, or pressure switch failed to close within 5 minutes of
inducer starting.
POWER and FLAME
Usually indicates false flame sense or flame sensed when it
shouldn't be there.
Control indicator lights —
non-lockout modes
light flashing alone
FLAME
Usually indicates pilot flame was not established within 15
seconds from application of spark. Control will flash light,
but will continue to cycle indefinitely until flame is established
or problem is corrected.
PRESS SWITCH
Usually indicates pressure switch opened during the run cycle.
Troubleshooting the control module
See for location of harness plug receptacles and plugs
Figure 38
on the control module.
Figure 37 Control module
Rear
panel
71038
(continued)
lights flashing
lights flashing
lights flashing
light flashing alone
71039
47