44
Service Manual VMH SerieS Heat Controller, Inc.
Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor exhaust temp.(Te) sensor.
Measure the resistance value of each winding by using the multi-meter.
Some frequently-used R-T data for Te sensor:
Temperature (0°F)
41°F/5°C
59°F/15°C
77°F/25°C
95°F/35°C
140°F/60°C
158°F/70°C
176°F/80°C
194°F/90°C
212°F/100°C
Resistance Value
(KΩ)
141.6 88 56.1 36.6 13.8 9.7 6.9 5 3.7
Some frequently-used R-T data for T1, T2, T3 and T4 sensor:
Temperature
(0°F)
41°F/5°C 50°F/10°C 59°F/15°C 68°F/20°C 77°F/25°C 86°F/30°C
104°F/40°C
122°F/50°C 140°F/60°C
Resistance
Value (KΩ)
26.9 20.7 16.1 12.6 10 8 5.2 3.5 2.4
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