HEAT PUMPS INSTALLATION INSTRUCTIONS MODELS PH1224 PH1230 PH1236

Manual 2100-344
Page 16
CHECKING TEMPERATURE SENSOR
CHECK OUT
1. Disconnect temperature sensor from board and from
outdoor coil.
2. Use an ohmmeter and measure the resistance of the
sensor. Also use ohmmeter to check for short or open.
3. Check resistance reading to chart of resistance; use
sensor ambient temperature. (Tolerance of part is
± 10%.)
4. If sensor resistance reads very low, then sensor is
shorted and will not allow proper operation of the heat
pump control.
5. If sensor is out of tolerance, shorted, open, or reads very
low ohms then it should be replaced.
0.52-1786910.51046350.55434710.591356
0.42-9900910.61150250.65489610.693836
0.32-5853810.71415050.75745610.799326
0.22-8137710.81820940.85221610.898906
0.12-9821710.91095740.95017510.991695
0.02-7845610.02002640.06013510.0017285
0.91-4099510.12558440.16129410.1017965
0.81-9254510.22455340.26445410.2010755
0.71-5539410.32592240.36771410.3016445
0.61-4734410.42770140.46028310.4016235
0.51-6759310.52898930.56474310.5018025
0.41-6594310.62757830.66731310.5014905
0.31-6050310.72256730.76018210.7012894
0.21-9126210.82385630.86294210.8013784
0.11-9802210.92845530.96381210.9017674
0.01-8018110.03545430.07388110.0113664
0.9-2724110.13475330.17195110.1112654
0.8-5750110.23436230.27703110.2114644
0.7-0107010.33327130.37130110.3117634
0.6-4753010.43048030.47267010.4114724
0.5-0620010.53689920.57105010.5112814
0.4-460790.63751920.67742010.6113904
0.3-189390.73553820.77000010.7116004
0.2-800190.83775720.8706790.8111293
0.1-931880.93328620.9762590.9118383
0.0173580.04290620.0899290.0217573
0.1996280.14383520.1877090.1218763
0.2121080.24696420.2826880.2211063
0.3236770.34030420.3835680.3216253
0.4032570.44483320.4894480.4212543
0.5019270.54857220.580528
0.6076070.64051220.687508
0.7705860.74165120.789687
0.8814660.84989020.886867
0.9993460.94534020.987057
0.01944260.05698910.094337
0.11565060.15473910.195617
0.21547850.25768810.290007
0.31589650.35573810.390486
0.41482550.45898710.493866
FR FR FR FR
TEMPERATURE F vs RESISTANCE R OF TEMPERATURE SENSOR