Maintenance Mode; How To Switch To Maintenance Mode - Sanden GAUS-160FQS Installation Manual

Maintenance Mode

Maintenance mode is a function to check the heat pump unit status and to check and
perform other settings. It should generally be assumed that the owner does not operate
this function. The following modes can be found in the maintenance mode.
Heat setting mode
Set the heating mode
Block out time setting mode
Set the block out time
Error history display mode
Check the history of any errors that may have occurred.
Parameter display mode
Check the values measured by the thermistor.
Air removing mode
Set the air removing mode

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 five modes described above. To finish the 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
Display Sleep Mode
No Operation
Any Key
for 60sec
Clock Display Mode
Enter
No Operation
for 60sec
Display Sleep Mode
Hold down "UP" and
"DOWN" together
Hold Enter
or
Enter
No Operation
or
for 60sec
Sanden Heat Pump – Installation Manual
Heat Setting Mode [H_SE]
Block out Time Setting Mode [bo ]
Error History Display Mode [Err ]
Parameter Display Mode [d_no]
Air Removing Mode [Air ]
Page 17 of 32
"DOWN" is reverse
Enter
Enter
UP
Enter
Enter
Enter