Temperature Sensor Identification Table; Component Troubleshooting; Compressor Check - Lennox MPA009S4S Service Manual

28. Temperature Sensor Identification Table
Sensor Number

29. Component Troubleshooting

29.1. Compressor Check

Measure the resistance value of each winding by using the tester. This can also be used to check for shorted compressor
windings, and identifying terminals when they are no longer legible.
ODU Model #
MPA012S4S-1L
MPA012S4S-1P
MPB009S4S-1L
MPB012S4S-1L
MPB009S4S-1P
MPB012S4S-1P
MPA009S4S-1L
MPA009S4S-1P
MPA018S4S-1P
MPB018S4S-1P
MPA024S4S-1P
MPB024S4S-1P
MPA030S4S-1P
MPB030S4S-1P
MPA036S4S-1P
MPB036S4S-1P
MPA048S4S-1P
MPB048S4S-1P
MPA018S4M-1P
MPB018S4M-1P
MPA030S4M-1P
MPB030S4M-1P
MPA036S4M-1P
MPB036S4M-1P
MPA048S4M-1P
MPB048S4M-1P
MLA009S4S-1P
MLA012S4S-1P
Table 14. Temperature Sensor Identification Table
T1
T2
T3
T4
T5
Figure 74. Compressor Terminals
Table 15. Model / Compressor Cross-Reference
Compressor Model #
ASM108D1UFZA
ASM98D32UFZ
ASN98D22UFZ
ASN98D22UFZ
ASM98D1UFZA
ASM135D23UFZ
ASM135D23UFZ
DA250S2C-30MT
ATF235D22UMT
TNB306FPGMC-L
ATF250D22UMT
TNB306FPGMC-L
ATF310D43UMT
MNB36FAAMC-L
ATQ420D1UMU
DA150S1C-20FZ
ATM150D23UFZ
DA250S2C-30MT
ATF235D22UMT
TNB306FPGMC-L
ATF310D43UMT
MNB36FAAMC-L
ATQ360D1UMU
ATM115D43UFZ2
Sensor Name
ID Return Air
Outdoor Coil
OD ambient temp
Compressor Discharge
Blue - Red Blue - Black
1.81Ω (20°C /68°F)
2.25 Ω (20°C /68°F)
1.57 Ω (20°C /68°F)
2.25 Ω (20°C /68°F)
1.81Ω (20°C /68°F)
1.75Ω (20°C /68°F)
1.65 Ω (20°C /68°F)
0.55Ω (20°C /68°F)
0.75 Ω (20°C /68°F)
0.53Ω (20°C /68°F)
0.65 Ω (20°C /68°F)
0.53Ω (20°C /68°F)
0.65 Ω (20°C /68°F)
0.44Ω (20°C /68°F)
0.378 Ω (20°C /68°F)
0.95Ω (20°C /68°F)
1.72 Ω (20°C /68°F)
0.55Ω (20°C /68°F)
0.75 Ω (20°C /68°F)
0.53Ω (20°C /68°F)
0.65 Ω (20°C /68°F)
0.44Ω (20°C /68°F)
0.37 Ω (20°C /68°F)
1.87 Ω
154
Indoor Coil
Red - Blue