Fisher FSKIF-121AE2-EU Service Manual page 139

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