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Error history display mode
Check the history of any errors that may have occurred.
Parameter display mode
Check the values measured by the thermistor.
Drive setting mode:
Switch the heat pump unit on/off.
Compulsory operation mode:
Compulsorily operate the water heating cycle. (Force on)
Pump remote operation mode:
Run the water circulation pump.
How to switch to Maintenance Mode
Press and hold down Up and Down keys together in the clock display mode to go to the
maintenance mode.
After the mode is switched, press the Enter key to select a mode from the six modes described
above.
To exit maintenance mode, press and hold down the Enter key, or leave for more than 60
seconds with no panel operation.
Figure 13 Maintenance mode diagram
Sanden Heat Pump – Installation Manual
Page 21 of 33
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