70
71
13.4 Error codes
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
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 continu ously,
change the water flow switch.
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.
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.
The 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.
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.
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.
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.
