ClimateMaster Tranquility Digital - DXM2 Dipswitch and Water Switch Checks; Verifying DXM2 Dipswitch Position; Replacing High Pressure Water Switch

Troubleshooting Guide - Tranquility
®
Digital (DXM2) Packaged Units
Rev.: 01/15/14
38
Geothermal Heat Pump Systems
Verifying Dipswitch Position
B-A
B-A
One of two high pressure water switches set to 145 PSI.
Note: If you are replacing a high pressure water switch, you can simply screw them off. However, beware that there is no
Schrader core. To prevent water escaping when you remove the high pressure water switch, isolate the loop using fl ush
valves in units with variable-speed pumps. To isolate the loop in units with modulating valves, use exterior ball valves.
Dip switch #1 in On Position for
Communicating
Relay
Off On
JW3
A
OVR
ESD
C
Acc1
Relay
Acc2
Relay
H
COM
NC1
NO1
COM
NC2
NO2
P3
Status
Fault
R R
S1
S2
Factory Use
Off On
COH
COM
AO2
P11
Gnd
T1
P10
T2 T2 T3 T3 T4 T4
T
A0-1 A0-2
Off On
S3
CCH
Relay
1 2 3 4
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A-Z
A-Z
Replacing High Pressure Water Switch