Specifications

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6720649497 SM HP270-1 2012/09 en

7. Troubleshooting

Code E01 Lock Out error

Fault in the hot water NTC temperature sensor (in the top of the tank)

1 Sensor is disconnected

Check connection to control unit and cable

integrity

2 Sensor is in short circuit Check cable, sensor and measure NTC value

3 NTC has values out of its borders Measure NTC sensor value

Code E02 Lock Out Error

Fault in the cold water NTC temperature sensor (blue mark)

1 Sensor is disconnected Check connection to control unit

2 Sensor is in short circuit Check cable, sensor and measure NTC value

3 NTC has values out of its borders Measure NTC sensor value

Code E03 Lock Out Error

Fault in the air NTC temperature sensor (yellow mark)

1 Sensor is disconnected

Check connection to control unit and cable

integrity

2 Sensor is in short circuit Check cable, sensor and measure NTC value

3 NTC has values out of its borders Measure NTC sensor value

Code E04 Warning Code (self reset error)

Temperature in storage tank higher than 80ºC (Detected by the hot water NTC in the top of the tank)

1 Heat Pump storage tank connected to a solar installation.

Reduce maximum temperature of storage tank

in the solar controller

2 Heat Pump storage tank connected to a boiler installation Reduce the sanitary water set point in the boiler

3 Hot Water NTC sensing wrong temperature value

Measure NTC sensor value

(multimeter in Ω position)

Code E05 – ONLY in model -10ºC - Lock Out Error

Fault in the Fins Evaporator NTC temperature sensor (white cables)

1 Sensor is disconnected

Check connection to control unit and cable

integrity

2 Sensor is in short circuit Check cable, sensor and measure NTC value

3 NTC has values out of expected range Measure NTC sensor value

Code E06 Warning Code

Setting buttons hold down for longer than 30 seconds. Self Reset after release buttons