107
TROUBLESHOOTING
Troubleshooting Error Code - 04
Check voltage wires and get an
electrical company involved if
necessary
Error Code:
04 - Locked rotor
Applicable Models:
Outdoor units
Method of Error Detection:
Integrated control module LED
display provides the indicated
error code
Error Decision Conditions:
Check compressor operation;
repair/ replace as needed. Check
run capacitor; replace as needed.
Check wiring; repair/replace as
needed. Verify line voltage is
within range on rating plate;
control local utility is out of range
Is the high voltage
to the system within
our specified
parameters?
No
Board is
reading 04
Replace the capacitor, then
operate the system
Yes
Check the
capacitor on the
system, is it
good?
Installed a hard
start kit. Does
this resolve the
issue?
No
No
Replace the board
System reports ON and is in
standby mode for a cooling call
Yes
Yes
ERROR CODE - 04
