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Under the off state of the unit, press
“Mode” and ( simultaneously for five
seconds.
Switch over the Celsius scale and the
Farenheit.
See Table 6.1 for a list of errors of the multi VRF indoor units and see Table 6.2 for a list of errors of the duct
type indoor units.
Fig. 6.1 Error Display
5.3.9 Switching between Celsius and Fahrenheit
When the current indoor unit is off, one may switch between Celsius and Fahrenheit by pressing Mode

See Fig.5.22 for Celsius and Fahrenheit switching demonstration:
Fig. 5.22 Switching between Celsius and Fahrenheit
6. Error Display
When an error arises during system operation, error codes will be displayed at the location where the
ambient temperature is usually displayed on the LCD.
See Fig.6.1 for a view of the error display:
Table 6.1 Errors for Multi VRF Indoor Units
Code Description
E1 High pressure protection of the compressor
E2 Anti-freezing protection of the indoor unit
E3 Low pressure protection of the compressor
E4 Discharge temperature protection of the compressor
E5 Over-current protection, overload protection of compressor, drive error
E6 Communication error
E7 Mode conflict
E9 Water overflow protection
EH E-heater protection
F0 Ambient temperature sensor error of the indoor unit
F1 Error of coil pipe inlet sensor of the indoor unit
F2 Error of coil pipe intermediate sensor of the indoor unit
F3 Error of coil pipe outlet sensor of the indoor unit
F4 Ambient temperature sensor error of the outdoor unit
F5 Error of coil pipe inlet sensor of the outdoor unit
F6 Error of coil pipe intermediate sensor of the outdoor unit
F7 Error of coil pipe outlet sensor of the outdoor unit
F8 Error of discharge temperature sensor 1 (fixed)
F9 Error of discharge temperature sensor 2 (digital)
FA Error of oil temperature sensor 1 (fixed)
Fb Error of oil temperature sensor 2 (digital)
Fc High pressure sensor error
Fd Low pressure sensor error
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16


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