Troubleshooting
Electrical Control System 135
2.4.1.6. Refrigerant Leakage Detection
Is there cool air blowing
out from indoor air outlet?
Yes
Yes
Check if T2 sensor is well
fixed. Correct the installation
or replace T2 sensor. Does
the problem remain again?
No
Is there any leakage? Especially
the connection parts, such as the
gas valve and the liquid valve.
No
Shut off the power supply and
turn it on
2 minutes
later. Is it
still displaying the error code?
Replace indoor PCB.
Yes
Repair the leakage and
recharge the refrigerant.
Yes
Clear the blocking.
Yes
Is there any blocking? (Such as the
capillary or the welded points of the pipes.)
2.4.1.7 Communication malfunction between indoor and outdoor units
The same as E1 in outdoor.