When a safety device is activated, an error code will be displayed on the user interface.
A list of all errors and corrective actions can be found in the table below.
Reset the safety by turning the unit OFF and back ON.
In case this procedure for resetting the safety is not successful, contact your local dealer.
ERROR
CODE
MALFUNCTION OR PROTECTION FAILURE CAUSE AND CORRECTIVE ACTION
E0
Flow switch error (E8 displayed 3
times)
1. The wire circuit is short connected or open. Reconnect the wire correctly.
2. Water flow rate is too low.
3. Water flow switch is failed, switch is open or close continuously, change the
water flow switch.
E1
Phase sequence fault(only for
threephase unit)
1. Check the power supply cables should be connected stable, to avoid phase
loss.
2. Check the power supply cables sequence, change any two cables sequence
of the three power supply cables.
E2
Communication error between user
interface and main control board of
hydraulic module
1. wire doesn’t connect between wired controller and unit. connect the wire.
2. Communication wire sequence is not right. Reconnect the wire in the right
sequence.
3. Whether there is a high magnetic field or high power interfere, such as lifts,
large power transformers, etc..
To add a barrier to protect the unit or to move the unit to the other place.
1E3
2The backup heater exchanger outlet
water temperature sensor（T1） error
1. The T1 sensor connector is loosen. Reconnect it.
2. The T1 sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive.
3. The T1 sensor failure, change a new sensor.
E4
The domestic hot water temperature
sensor (T5) error.
1. The T5 sensor connector is loosen. Reconnect it.
2. The T5 sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The T5 sensor failure, change a new sensor.
E5
The condenser outlet refrigerant
temperature sensor (T3)error.
1. The T3 sensor connector is loosen. Reconnect it.
2. The T3 sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The T3 sensor failure, change a new sensor.
E6
The ambient temperature sensor (T4)
error.
1. The T4 sensor connector is loosen. Reconnect it.
2. The T4 sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The T4 sensor failure, change a new sensor.
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