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NOTE: ALL RESISTANCES SHOWN ARE APPROXIMATIONS
* DC Motors - Resistances should read very high if at all a loZer reading indicates a defective motor
Component Checks at Main Board
Thermistors
INDOOR
J29 pin 1 - 2 AIR range 7k ohms to 64k ohms
J29 pin 3 - 4 COIL range 10.5k ohms to 95k ohms
OUTDOOR
J30 pin 1 - 2 AIR range 3k ohms to 28.5k ohms
J30 pin 4 - 5 COIL range 3k ohms to 28.5k ohms
Indoor Fan Motor *
J2 pin 1 - 2 Blue to Yellow
J2 pin 3 - 4 White to Black 38.5k ohms approximately
J2 pin 3 - 6 White to Red
J2 pin 4 - 6 Black to Red
Outdoor Fan Motor *
J3 pin 1 - 2 Blue to Yellow
J3 pin 3 - 4 White to Black 47k ohms approximately
J3 pin 3 - 6 White to Red 8meg ohms approximately
J3 pin 4 - 6 Black to Red
ICR Pump
J23 pin 1 - 2 Yellow to Yellow 260 ohms (230/208 models)
Thermal fuse/In-line fuse
J21 pin 1 to Black on Capacitor .001 ohms
High Pressure SZitch
White plug connector Black to Capacitor White 3.5 ohms
Reversing Valve Coil
J22 pin 1 - 2 Pink to Pink 1.5k ohms (230/208 models)
Heaters (230/208 models)
Plug Blue to Brown on relay 21 ohms
Plug Brown to Brown on relay 36 ohms
Plug Yellow to Brown on relay 50 ohms
= In¿nite
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