Code
Description
Checking / solution
The maximum operating time for the compressor is
exceeded.
Wait one hour, after which the compressor will re
start on request.
Air pressure switch open.
Contact the professional who handles mainte
nance of the appliance.
Air pressure switch in short circuit.
Contact the professional who handles mainte
nance of the appliance.
Very low air pressure within the installation.
Note: Domestic hot water production is assured by
the back-up, if the back-up is authorised
Contact the professional who handles mainte
nance of the appliance.
The room temperature sensor is in short circuit
Note: Domestic hot water production is ensured by
the back-up, if the back-up is authorised
Contact the professional who handles mainte
nance of the appliance.
The room temperature sensor is open
Note: Domestic hot water production is ensured by
the back-up, if the back-up is authorised
Contact the professional who handles mainte
nance of the appliance.
Low air pressure within the installation.
Contact the professional who handles mainte
nance of the appliance.
The middle domestic hot water temperature sensor
is open.
Contact the professional who handles mainte
nance of the appliance.
The middle domestic hot water temperature sensor
is in short circuit.
Contact the professional who handles mainte
nance of the appliance.
The top domestic hot water temperature sensor is
open.
Contact the professional who handles mainte
nance of the appliance.
The top domestic hot water temperature sensor is
in short circuit.
Contact the professional who handles mainte
nance of the appliance.
The bottom domestic hot water temperature sen
sor is open.
Contact the professional who handles mainte
nance of the appliance.
The bottom domestic hot water temperature sen
sor is in short circuit.
Contact the professional who handles mainte
nance of the appliance.
Filter servicing date passed.
Contact the professional who handles mainte
nance of the appliance.
The control module batteries do not have sufficient
charge.
Replace the batteries.
No radio communication between the water heater
and the control module.
Check the radio communication.
Contact the professional who handles mainte
nance of the appliance.
Pairing of the control module and the water heater
not possible.
Contact the professional who handles mainte
nance of the appliance.
7.1.2
Lockout (
type code)
1. The display shows:
The symbol (!)
The symbol reset
The malfunction code (for example
).
2. After resolving the malfunction, press the reset key for 2 seconds. If
the error code is still shown, find the cause in the table of errors and
apply the solution.
Fig.30
C003212-B
2"
1
4
3
4
1
2
MENU
MODE
7 Troubleshooting
30
TWH 200 EV
EN-7602920 - v10 - 24042019
