Correcting After Abnormal Completion Of The Test Run; Troubleshooting; Error Codes: Overview - Daikin SERHQ020BAW1 Installation And Operation Manual

8 Troubleshooting

7.6 Correcting after abnormal
completion of the test run
Main code
The stop valve of the outdoor unit is left closed.
Refrigerant overcharge.
Insufficient refrigerant.
Reversed power supply phase malfunction.
No power is supplied to the outdoor unit.
The piping and wiring of the specified indoor unit are not
connected correctly to the outdoor unit.
After correcting the abnormality, press BS3 and reset the error code.
8 Troubleshooting
8.1

Error codes: Overview

Main code
Failure writing memory (EEPROM error)
Water circuit malfunction
R410A expansion valve error (K11E/K12E)
Water system warning
Capacity error
Bad ACS communication
R410A liquid thermistor error (R13T/R23T)
Returning water thermistor error (R12T/R22T)
Heating leaving water thermistor error (R11T/R12T)
User interface thermostat thermistor error
High pressure error (SENPH/S1PH)
Low pressure error (SENPL)
Installation and operation manual
38
The test operation is only completed if there is no malfunction code
displayed on the user interface or the H2P LED is not lit.
Cause
Carry out the test operation again and confirm that the abnormality is
properly corrected.
Cause
Solution
Open the stop valve on both the gas and liquid side.
Recalculate the required amount of refrigerant from the
piping length and correct the refrigerant charge level by
recovering any excessive refrigerant with a refrigerant
recovery machine.
Check if the additional refrigerant charge has been finished
correctly. Recalculate the required amount of refrigerant
from the piping length and add an adequate amount of
refrigerant.
Correct phase order.
Check if the power wiring for the outdoor unit is connected
correctly.
Confirm that the piping and wiring of the specified indoor unit
are connected correctly to the outdoor unit.
Solution
Contact your local dealer.
▪ Check that water flow is possible (open all valves in the
circuit).
▪ Force clean water through the unit.
▪ Check wiring connections.
▪ Contact your local dealer.
▪ Check filter.
▪ Make sure all valves are open.
▪ Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
▪ Check wiring connections.
▪ Contact your local dealer.
▪ Check wiring connections.
▪ Contact your local dealer.
▪ Check wiring connections.
▪ Contact your local dealer.
Contact your local dealer.
▪ Check that the circuit does not contain any air.
▪ Check that water flow is possible (open all valves in the
circuit).
▪ Check that the water filter is not blocked.
▪ Check that all refrigerant stop valves are open.
▪ Contact your local dealer.
Contact your local dealer.
SERHQ020~032BAW1 + SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508019-2B – 2018.01