ClimateMaster Tranquility Digital - Reversing Valve Voltage Checks; Verifying 24 V at Reversing Valve; Checking Reversing Valve via DXM2

Troubleshooting Guide - Tranquility
®
Digital (DXM2) Packaged Units
Rev.: 01/15/14
34
Geothermal Heat Pump Systems
A-U
A-U
Comp
Relay
24Vdc
EH1
EH2
P6
JW3
CO
RV RV
LT1 LT1 LT2 LT2
LP LP
P7
CC
CCG
CO
12
1 4
n
P10
T3 T4 T4
T5
P9
T5
T6 T6
RV
Relay
CCH
Relay
12345678
18-31.5
Volts AC
Checking Reversing Valve at DXM2
Verifying 24V at Reversing Valve
A-T
A-T
Verify 24V at reversing valve when calling for cooling
To check the solenoid’s magnetic pull, begin by pulling solenoid off of reversing valve. Then energize solenoid and place a
metal screw driver in solenoid. You should feel the screw driver being pulled by the magnetic fi eld.