Daikin ComfortNet DX7TC Service Instructions Manual page 105

TROUBLESHOOTING
Troubleshooting
Error Code:
02, L2 - High side fault
Applicable Models:
Outdoor units
Method of Error Detection:
Integrated control module LED
display provides the indicated
error code
Error Decision Conditions:
Four consecutive compressor
protector trips with average run
time between trips greater than 1
minute and less than 15 minutes.
Low pressure and high pressure
switches are closed. Integrated
control module diagnostic/ status
LED display shows the indicated
code
Board is
reading 02, L2
Check the
No
resistance of high
pressure switch, is
it open?
Yes
Read pressure
No
on a guage, is
the pressure
high?
Yes
ERROR CODE - 02, L2
Error Code - 02, L2
Cycle power
Repalce pressure switch
Check and clean condenser
coil, check outdoor fan motor,
repair/replace as needed.
Check capacitor , check wire
105