Troubleshooting
NOTE
Work behind covers secured by screws may
only be carried out by, or under the supervision
of, a qualified installation engineer.
NOTE
As AG-AA10 can be connected to several dif-
ferent indoor units, these should also be
checked.
NOTE
In the event of action to rectify malfunctions
that require work within screwed hatches the
incoming electricity must isolated at the safety
switch.
Basic actions
Start by checking the following possible fault sources:
■
That the climate unit is running or that the supply
cable to AG-AA10 is connected.
■
Group and main fuses of the accommodation.
■
The property's earth circuit breaker.
Fault codes
Caution
Remove the side panel that protects the ter-
minal blocks to read off the LEDs. See page
8.
Key to symbols
The LED is off.
The LED flashes.
CauseDL7DL6DL5DL4DL3
Compressor sensor defective or not connected.
Outdoor temperature sensor defective or not connected.
Evaporator sensor defective or not connected.
Overcurrent on compressor.
The compressor's control electronics have overheated.
Overcurrent on fan.
The fan's control electronics have overheated.
Fault in indoor unit.
Communication error.
Phase monitor tripped.
When the unit functions correctly DL3 lights with a
steady light. DL4 lights with a steady light if the indoor
unit is running, otherwise the lamp is out.
13Chapter 7 | Disturbances in comfortAG-AA10
7 Disturbances in comfort
To Next Page
Loading...