16 17
7. Heater Measure resistance of the
following terminal
Terminal: 1 (COM) - 2
Terminal: 1 (COM) - 3
Terminal: 2 - 3
Resistance value: 10Ω
Resistance value: 10Ω
Resistance value: 20Ω
• Electric type
8. Thermistor Measure resistance of terminal
to terminal
Temperature condition:
58°F ~ (10~40°C)
58°F ~ 104F (10~40°C)
Resistance value: 10Ω• Heater case -
Hi limit
• Electric type
9. Motor • See Page 13
10. Gas valve
valve 1
valve 2
Measure resistance of the
following terminal
Valve 1 terminal
Valve 2 terminal
Resistance value: >1.5 k
Ω
Resistance value: >
1.5~2.5 k
Ω
• Gas type
11. Igniter Measure resistance of terminal
to terminal
Resistance value: 100~800Ω• Gas type
12. Flame DetectMeasure resistance of terminal
to terminal
Open at 370°F ((Maximum)
Close at 320°F
Resistance value
≒
∞
Resistance value <1Ω
• Gas type
Component Test Procedure Check result Remark