ClimateMaster Tranquility Digital - Page 21

21
Troubleshooting Guide - Tranquility
®
Digital (DXM2) Packaged Units
Rev.: 01/15/14
No Fault Code Shown
X X No compressor operation :LL6US`-HU6WLYH[LZ
X X Compressor overload Check and replace if necessary
X X Control board Reset power and check operation
Unit Short Cycles
Check Thermostat
Location and
Anticipation Setting
XX+PY[`HPYÄS[LY *OLJRHUKJSLHUHPYÄS[L r
X X Unit in ;est 4VKL Reset power or wait 20 minutes for auto exit
X X Unit selection
Unit may be oversized for space - check sizing for actual
load of space
X X Compressor overload Check and replace if necessary
Only Fan Runs
X X Thermostat position Insure thermostat set for heating or cooling operation
X X Unit locked out Check for lockout codes - reset power
X X Compressor overload
Check compressor overload - replace if necessary
X X Thermostat wiring
Check thermostat wiring at DXM2 - put in Test Mode and
ESD - ERV Fault
(DXM Only)
Green Status
LED Code 3
XX
ERV unit has fault
(Rooftop units only)
Troubleshoot ERV unit fault
Q\TWLY@HUK9[VNP]LJHSSMVYJVTWYLZZVY
IFC Fault Code 13
Internal Flow
Controller Fault
XX
No pump output signal Check DC voltage between A02 and GND - should be
IL[^LLUHUK=+*^P[OW\TWHJ[P]L:LL(1
Low pump voltage
*OLJRSPUL]VS[HNL[V[OLW\TW:LLWPJ[\YL(6
No pump feedback signal
Check DC voltage between T1 and GND. Voltage should
be between 3 and 4 VDC with pump OFF, and between
HUK=+*^P[O[OLW\TW65:LL()
Bad pump RPM sensor Replace pump if the line voltage and control signals are
present at the pump, and the pump does not operate
Fault Htg C
lg
Possible Cause Solution
Commercial
Only
Functional Troubleshooting
A-F
A-F