37 _ Troubleshooting
■ Centrifugal Switch (Motor)
■ Thermistor
238.23 Ω @ 25°C 77
■ GAS MODEL
Radiant Sensor(10RS)
• Resistance value < 1 Ω
• If resistance is
replace Radiant sensor
120V
Igniter(101D)
• Resistance value 40~400 Ω
• If resistance is
replace Igniter
120V 4.5A
Thermostat (60T21 Hi-Limit)230F-50F
• Resistance value < 1 Ω
• If resistance is
replace Thermostat
120V 20A (60T2)
2.88Ω between
Pin# 3 and 4
3.5Ω between
Pin# 4 and 5
Gas valve (25M01A)
• Valve 1-2: Resistance value approx. 1365 Ω
• Valve 1-3: Resistance value approx. 560 Ω
• Valve 4-5: Resistance value approx. 1325 Ω
• Valve 6-7: Resistance value approx. 1000 Ω
• If resistance is infinite, replace valve.
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