Troubleshooting By Error Code - Carrier 40MPHA Service Manual

TROUBLESHOOTING BY ERROR CODE

Common Check Procedures
Temperature Sensor Check
Disconnect the temperature sensor from PCB, measure the resistance value with a tester.
Temperature Sensors.
Room temp. (T1) sensor,
Indoor coil temp. (T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor discharge temp.(Tp) sensor.
Measure the resistance value of each winding by using the multi-meter.
Compressor Checking
Measure the resistance value of each winding by using the tester.
POSITION
Blue - Red
Blue - Black
Red - Blue
40MPHA-03SM
Fig. 15 — Compressor Checking
Table 17 — Compressor Checking
Specifications subject to change without notice.
RESISTANCE VALUE
ATM115D43UFZ2

1.87 (20°C/68°FX)
25