CPG 351FGC200DDK Service Manual - Page 10

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Service Manual
351FGC100(L/N) | 351FGC200(L/N)K
351FGC100DD(L/N) | 351FGC200DD(L/N)K

Gas Solenoid Valve

Ensure gas is being supplied to unit. Check
1.
incoming pressure using manometer on inlet
side of valve.
Check if solenoid valve is getting 24 VAC. If
2.
no voltage, check ignition module. If voltage
is found, and still no gas is coming through,
replace gas valve (Fig. 26).
Check for any discoloration or deformations of
3.
electrical connections. If any are found,
replace connections.

Temperature Sensor

Disconnect wiring from thermostat. Check
1.
resistance of sensor across wire terminals,
1.1 kilo-ohms +/- 10 % at 70° F. Replace
if outside of range (valve will change with
temperature) (Fig. 27).
Check for any discoloration or deformations of
2.
electrical connections. If any are found,
replace connections.

Panel Safety Switch

Disconnect wires from rear of switch. Check
1.
continuity between terminals when switch is in
'CLOSED' position. If continuity is not found in
'CLOSED' position, replace switch. If found, see
below for more testing (Fig. 28).
With wires disconnected, check for no continuity
2.
between terminals when switch is in 'OPEN'. If
continuity is found, replace switch. If not found
see below.
With unit 'ON' and unit plugged in, check for 120 volts from each terminal to neutral when
3.
switch is 'CLOSED'. Replace if not found on both terminals.
Check for any discoloration or deformations of electrical connections. If any are found,
4.
replace connections.
10
Fig. 26
Fig. 27
Fig. 28
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