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M-SV-001-EN Rev. G
4.7.2 Solenoid Coil Harness
Figure 4-30 Solenoid Coil Harness
4.7.2.1 Solenoid Coil Harness Removal and Installation
For details, refer to "4.7.4.1 Solenoid and Coil Removal" on page 75 and "4.7.4.2 Solenoid and
Actuator Installation" on page 76.
4.7.3 Solenoid Verification
4.7.3.1 Resistance Measurement of Cooling Solenoid Coils
1. Isolate compressor power as described in Section "1.8 Electrical Isolation" on page 19.
2. Remove the Service Side Cover. Refer to "4.2.3.1 Service Side Cover Removal and Installation"
on page 58.
3. Disconnect the Compressor-Cooling Solenoid Coil Connector (J16) from the Backplane.
4. Set the multimeter for resistance measurement.
5. Observe the voltage and power specification indicated on the side of the Compressor-Cooling
Coils and refer to "Table 4-10 Solenoid Coil Resistance Ranges" to find the expected resistance
for the left and right Compressor-Cooling Coils.
6. To measure the resistance across the left Compressor-Cooling Solenoid Coil, place the meter
probes at Pins 1 and 3 of the cable connector. Refer to "Figure 4-32 Compressor Cooling
Solenoid Coil Cable Connector" on page 74.
7. To measure the resistance across the right Compressor-Cooling Coil, place the meter probes
at Pins 5 and 6 of the cable connector. Refer to "Figure 4-32 Compressor Cooling Solenoid Coil
Cable Connector" on page 74.
Figure 4-31 Backplane - J16 Connector
Table 4-10 Solenoid Coil Resistance Ranges
• • • CAUTION • • •
When actuator coils are removed from the solenoids, they must be replaced in the same location. Incorrect installation can result
in damage to compressor components.
J16
Model Voltage Power Resistance
TTS300 starting at
142035030, TTS350,
TTS500, TTS700, TTH375,
TGS230, TGS310, TGS390,
TGS490, TGS520, & TGH375
24V 9.3W 56.25Ω – 68.75Ω
TTS300 prior to 142035030 24V 4.8W 108Ω – 132Ω
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