Circuit Module - Trane CVHE Troubleshooting Manual

Circuit Module

1U2 assigned functions associated with compressor motor, lubrication system and refrigerant
monitoring.
Low Voltage (<30VAC) Inputs:
24 VAC, IPC link
Compressor motor winding temp. sensors 1, 2, 3
Oil tank temperature
Refrigerant monitor equipment room ppm level
Condenser refrigerant pressure
Oil sump pressure
Oil discharge pump pressure
High Voltage, High Amperage (120 VAC) Inputs:
High Condenser Pressure
High Voltage, High Amperage (120 VAC) Outputs:
Vent line solenoid valve; oil tank heater; oil pump motor
Figure 3
Circuit Module
IP Communications
Motor Wind. Temp 1
Motor Wind Temp 2
Motor Wind Temp 3
Oil Temp
Refgt Monitor
Condenser Pressure
Cond. Refgt. Press.
Oil Sump Pressure
Oil Sump Disch. Pressure
CVHE-SB-32A
J1
J3
J5
J7
J9
J2
24 VAC
J4
J6
J16 Vent Line Solenoid
J20
Oil Tank Heater
Oil Pump Motor
J22
Refgt Pump Relay
Cond. High Press. Switch
J26
40