Table des Matières
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Fault Finding Solutions Sections A to K
A
Is there 120V at:
1.
Main terminals L and N
2.
Main terminal fuse
3.
Selector terminals a & b and
a & 3. PCB - A4 connector
terminals 4 & 5
B
Temperature sensors faulty.
Cold resistance approx. 11K ohms
C
Fan connections correct at fan.
PCB - A5 connector, is 120V
across terminals 5 & 7
D
Check and correct if necessary
1. Electrical and pressure tube connections
2. Blockage of pressure tubes
3. Restriction in flue
4. Venturi
E
NO
Gas at burner
NO
YES
NO
YES
NO
NO
Ensure gas is on and purged
PCB - A1 connector has 120V AC
across terminals 2 & 4
NO
neon flashing
NO
Replace PCB
Check electrical supply
Replace fuse
Check wiring
Replace selector
YES
Replace sensor
Fan jammed or faulty winding
Replace PCB
Replace air pressure
switch
YES
Replace gas valve
YES
Turn selector switch to
reset position R
25
NO
neon
Replace PCB
illuminated
YES
Replace fan
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Table des Matières
