. Heater
8. Thermistor
9. Motor
10. Gas valve
valve 1
valve 2
11. Igniter
12. Flame Detect
Measure resistance of the
following terminal
Terminal: 1 (COM) - 2
Terminal: 1 (COM) - 3
Terminal: 2 - 3
Measure resistance of terminal
to terminal
Temperature condition:
Measure resistance of the
following terminal
Valve 1 terminal
Valve 2 terminal
Measure resistance of terminal
to terminal
Measure resistance of terminal
to terminal
Resistance value: 10
Resistance value: 10
Resistance value: 20
Resistance value: 10
Resistance value: 50~800
Resistance value
15
Electric type
Heater case -
Hi limit
Electric type
See Page 1
Gas type
Gas type
Gas type