8 Troubleshooting
Installation and operation manual
22
EWAQ016~064CAW + EWYQ016~064CAW
Packaged air-cooled water chiller
4P489435-1B – 2017.10
Installation date and field setting
Be sure to keep record of the installation date on the
sticker on the rear of the upper front panel according to
EN60335‑2‑40 and keep record of the contents of the field
setting(s).
Schedule timer form
Fill out the form at the very end of this document. When
programming the schedule timer, this form can help you
define the required actions for each day.
NOTICE
Operating the system with closed valves will damage the
pump.
Once all checks are fulfilled, the unit must be closed, only then can
the unit be powered up. When the power supply to the unit is turned
on, " " is displayed on the remote controller during its initialization,
which may take up to 30 seconds. During this process, the remote
controller cannot be operated.
7.3 Final check
Before switching on the unit, read the following recommendations:
▪ When the complete installation and all necessary settings have
been carried out, be sure that all panels of the unit are closed. If
this is not the case, inserting your hand through the remaining
openings can cause serious injury due to electrical and hot parts
inside the unit.
▪ The service panel of the electrical component box may only be
opened by a licensed electrician for maintenance purposes.
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
INFORMATION
During the first running period of the unit, the required
power may be higher than stated on the nameplate of the
unit. This phenomenon is caused by the compressor, that
needs a continuous run time of 48hours before reaching
smooth operation and stable power consumption.
8 Troubleshooting
8.1 Error codes: Overview
Main code Cause Solution
Failure writing memory (EEPROM error) Contact your local dealer.
Water circuit malfunction ▪ Check that water flow is possible (open all valves in the
circuit).
▪ Force clean water through the unit.
R410A expansion valve error (K11E/K12E) ▪ Check wiring connections.
▪ Contact your local dealer.
Water system warning ▪ Check filter.
▪ Make sure all valves are open.
▪ Contact your local dealer.
Capacity error Contact your local dealer.
Bad ACS communication Contact your local dealer.
R410A liquid thermistor error (R13T/R23T) ▪ Check wiring connections.
▪ Contact your local dealer.
Returning water thermistor error (R12T/R22T) ▪ Check wiring connections.
▪ Contact your local dealer.
Heating leaving water thermistor error (R11T/R12T) ▪ Check wiring connections.
▪ Contact your local dealer.
Remote controller thermostat thermistor error Contact your local dealer.
High pressure error (SENPH/S1PH) ▪ 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.
Low pressure error (SENPL) Contact your local dealer.
R410A suction thermistor error (R14T/R24T) ▪ Check wiring connections.
▪ Contact your local dealer.
Reversed power supply phase malfunction Correct phase order.
Insufficient supply voltage ▪ Check wiring connections.
▪ Contact your local dealer.
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