CPG 351FGC100L Manuale di servizio - Pagina 7

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Service Manual

351FGC100(L/N) | 351FGC200(L/N)K

351FGC100DD(L/N) | 351FGC200DD(L/N)K

Transformer

Check for 120 volts at terminals (Fig. 13A).

Check for 24 volts at terminals (Fig. 13B). If voltage is

not correct, replace.

24 volts goes to thermostat, 'HEAT ON' lamp and gas

solenoid valve.

Check for any discoloration or deformations of electrical

connections. If any are found, replace connections.

Ignition Module

S1 connection - 120 VAC surface igniter

L1 connection - 120 VAC input power (live)

W connection - Fan motor then thermostat

V1 connection - Gas solenoid valve

GND connection - Ground

S2 connection - Flame sensor

Check that module has power, check for 120 volts from L1 connection to GND connection and

also from L1 connection to a Neutral wire on the back of unit (Fig. 15 & 16).

Red Light Definitions:

- Solid red, no blinks: control fail, replace ignition module

- 2 blinks: flame on, but no call for heat, check thermostat

- 3 blinks: no flame, ignition locked out, check ignition sequence parts (surface igniter, gas

solenoid valve, flame detector)

Fig. 14

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Fig. 15

Fig. 13

Fig. 16