Unit installation

49
climatemaster.com
THE SMART SOLUTION FOR ENERGY EFFICIENCY
Tranquility
®
22 (TY) Series
Rev.: 12/17/14
Functional Troubleshooting (cont.)
Fault Htg Clg Possible Cause Solution
ESD - ERV Fault (DXM Only)
Green Status LED Code 3
XXERV unit has fault (Rooftop units only) Troubleshoot ERV unit fault
No Fault Code Shown
XX
No compressor operation See ‘Only Fan Operates’
Compressor overload Check and replace if necessary
Control board Reset power and check operation
Unit Short Cycles
XX
Dirty air fi lter Check and clean air fi lter
Unit in ‘Test Mode’ Reset power or wait 20 minutes for auto exit
Unit selection Unit may be oversized for space - check sizing for actual load of space
Compressor overload Check and replace if necessary
Only Fan Runs
XX
Thermostat position Ensure thermostat set for heating or cooling operation
Unit locked out Check for lockout codes - reset power
Compressor overload Check compressor overload - replace if necessary
Thermostat wiring
Check thermostat wiring at DXM2 - put in Test Mode and jumper Y1 and R to
give call for compressor