Grant Aerona 3 HPID10R32, Instructions Manual, Page: 51 / 100

Page 51 Section 11: Fault Finding
11.1 ERROR CODE DISPLAY
In the event that a fault is detected, a red LED on the ON/OFF
switch of the remote controller will flash and a warning icon and
error code will be displayed on LCD screen and also on the
Terminal PCB display.
11 Fault Finding
Terminal PCB
Reset SW. Pump SW.
Display
Warning icon
and error code
Remote controller
LED(red)
Figure 11-1: Error code display
11.2 ERROR HISTORY DISPLAY
The previous 10 error codes can be displayed on Terminal PCB
display.
Procedure to display on Terminal PCB display:
1. Press Pump SW and Reset SW on Terminal PCB at the same
time for five seconds and the error history order and error code
will be displayed alternately. The first one is the latest error
code.
2. Press Pump SW to go through the history order up to the 10th
error code and then go back to the latest error code.
3. When there is no error history, ‘--’ will be displayed.
If no operation is carried out for five minutes or both the Pump SW
and Reset SW are pressed together for five seconds, the display
returns to normal display.
Deletion of the error history:
During error code display, press Reset SW and Pump SW for ten
seconds to delete the error history.
Terminal PCB
Reset SW.
Remote controller
3seconds
Figure 11-2:
Resetting error code display
11.3 RESET ERROR CODE DISPLAY
Auto
Once it returns to normal condition, the error will automatically be
reset.
When the heat pump stops, it may not possible to reset
automatically. In this case, reset manually.
Manual
To reset, press – and + o buttons on the Remote Controller at the
same time for three seconds, or press Reset SW on the Terminal
PCB.
Refer to Figure 11-2.
It is possible to reset by turning the mains power supply switch OFF
→ ON, although this is not recommended.