Daikin EHYHBH05AAV3, Service Manual

Page: 78 / 170

Troubleshooting ESIE13-02A
Part 4 – Troubleshooting 78
3
1
4
5
Legend
Note
(1)
There is a possibility of open phase power supply, check power supply also.
S
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U0 Lack of gas malfunction
U0 Abnormal suction pipe temperature
U0
U2
Abnormal power supply voltage Including malfunction of K10R, K11R
U3 Underfloor heating screed dry-out error Can only be reset when in installer level
U4/UF Failure of transmission (between hydro-box and outdoor
unit) Transmission between hydro-box and outdoor
unit is not being carried out correctly.
(1)
UF Failure of transmission (between hydro-box and outdoor
unit)
or
Gas shortage
Transmission between hydro-box and outdoor
unit is not being carried out correctly.
or
There is very little or no refrigerant flow within
the hydro-box.
U5 Failure of transmission (between hydro-box and remote
controller) Transmission between hydro-box and remote
controller is not being carried out correctly.
UA Incorrect hydro-box connected to the system
or unit type connection not confirmed In case of spare part PCB.
Malfunction code Contents/Processing Remarks
Colour Meaning
Error code displays automatically and system stops.
Inspect and repair it.
In case of shaded error codes, ‘inspection’ is not displayed. The system operates
but be sure to inspect and repair it.
Error code displayed on user interface.
The system operates, but be sure to inspect and repair it.