Troubleshooting; Anti-Hunting; Messages - DeDietrich AWHP-2 MIT-IN-2 iSystem User Manual

AWHP-2 MIT-IN-2 iSystem
6

Troubleshooting

6.1

Anti-hunting

6.2

Messages

Code Messages
B00 BL.PSU ERROR
B02 BL.FLOW S.
B08 BL.SC.IN.OPEN
10/06/2015 - 7616372-001-05
When the heat pump is in "anti-short cycle" operating mode, the
symbol "?" flashes. This is a normal operating mode. When the restart
temperature is reached, operation will be guaranteed.
1. Press the "?" key.
The message Operation assured when the restart temperature
will be reachedteinte} is displayed. When the restart temperature
is reached, operation will be guaranteed.
In the case of failure, the control panel displays a message and a
corresponding code.
1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the
type of failure and for any technical assistance that may be
needed.
2. Switch off heat pump and start up again.
The heat pump starts up again autonomously when the cause of
the failure has been lifted.
3. If the code is displayed again, correct the problem by following the
instructions in the table below:
Description
The PSU PCB is incorrectly
configured
The MIT flow sensor is short
circuited or on an open circuit.
The BL inlet on the PCU PCB
terminal block is open. No
antifreeze protection.
This message is not an error message but an item of
information.
Checking / solution
Parameter error on the PSU PCB
Contact the professional who takes care of
4
maintenance of the appliance
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
The contact connected to the BL inlet is open.
Contact the professional who takes care of
4
maintenance of the appliance.
Parameter error.
Contact the professional who takes care of
4
maintenance of the appliance.
Bad connection.
Contact the professional who takes care of
4
maintenance of the appliance.
6. Troubleshooting
32