35
Tranquility
®
D i g i t a l ( D X M 2 ) — Tr o u b l e s h o o t i n g G u i d e
R e v. : 1 0 M a r c h , 2 0 1 5
w w w. c l i m a t e m a s t e r. c o m
P1
Alarm Relay
Comp Relay
O
Y1
Y2
W
G
C
R
AL1
24Vdc
EH1 EH2
P6
R
C
Off On
JW3
A
OV
R
ESD
C
R
NSB
AL2
JW1
Acc1 Relay
Acc2 Relay
H
CO
M
NC1
NO
1
CO
M
NC2
NO
2
P3
CO
RV
RV
LT1 LT1 LT2 LT2
LP LP
HP
HP
P7
Status
Fault
R
R
CC
CCG
CO
S1
S2
1
12
1
4
Factory Use
(240V
ac)
Com
N.O.
Fan Enable
5
1/
2"
7"
6
1/
2"
5"
Use 4 mounting screws
#6 sheet metal screw 1” long
1.5
3/8” standof
f
Factory lo
w
voltage mole
x
connection for unit harness
Factory lo
w
voltage mole
x
connection for electric heat
harness
Micr
o
U1
Off On
P2
COH
COM
AO2
P11
Gnd
T1
P10
T2
T2
T3
T3
T4
T4
T5
P9
T5
T6
T6
A0-1
A0-2
Off On
S3
RV Relay
CCH Relay
Test
P5
B-
Gnd
P4
A+
24V
(240V
ac)
Fan Speed
N.O.
N.C.
12V
OUT Gnd
P8
IN
NC
P12
Note: There is only one T1 connection
1 2 3 4
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
AO1
Gnd
18-31.5
Volts AC
Checking Reversing Valve at DXM2
A-U
Verifying 24V at Reversing Valve
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 field.
