Error Display - Delta 21CK018C24 Instruction Manual

3.5 Error Display

If there is malfunction during running of the system, LCD will display error code at temperature–displayed location.
Once there is more than one malfunction, error codes will be displayed circularly. If there are multiple circuit
systems, the system number of failed system will be displayed before the colon (not for single system).
If malfunction occurs, turn off the unit and contact nearest dealer for help.
As shown in Fig.3.5.1, it means high pressure protection of system 2 under unit on.
Error code meaning:
Error code Malfunction
E2 Indoor anti-freezing protection
E6 Communication malfunction
E9 Water overflow protection
F0 Indoor unit ambient sensor malfunction at air return opening
F1 Evaporator sensor malfunction
F5 Ambient sensor malfunction on Displayer(or LED board)
Fig.3.5.1
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