Warmhaus AQUWA 12, User Manual

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2.4. SOLUTIONS FOR MALFUNCTIONS AND ERRORS
Malfunction/
Error Code
Malfunction/Error Code
Description
Water Heater Status Possible Causes Solution
E 04
Hot Domestic Water
temperature sensor error
Device is not functioning
and E04 malfunction
code is flashing on the
screen
Hot Domestic Water
temperature sensor error
1-) Reset / restart the device and check if the malfunction
is resolved.
2-) If the malfunction persists, call the Authorized Service.
E 05
Hot Domestic Water
temperature (Safety)
sensor error
Device is not functioning
and E05 malfunction
code is flashing on the
screen
Hot Domestic Water
temperature (Safety)
sensor error
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 06 No ignition
Device is not functioning
and E06 malfunction
code is flashing on the
screen
Gas supply failure
1-) Reset / restart the device and check if the malfunction
is resolved.
2-) Check if other gas devices are working. 3-) Check if the main
gas valve is open.
4-) Check if the device gas valve under the device is open or not.
5-) Reset
/ restart the device and check if the malfunction
is resolved.
6-) If the malfunction persists, call the Authorized Service.
E 07
Security/Safety
Thermostat intervention
Device is not functioning
and E07 malfunction code
is flashing on the screen
Low water flow rate
Clogged installation
1-) Reset / restart the device and check if the problem is
solved.
2-) Check the water flow
2-) If the problem is not solved, call the authorized service.
E 08
Flame circuit
malfunction
Incorrect flame signal
from electrode or
combustion
Wear or rust on the
electrode
Electrode position
Broken wiring
Electronic card
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 09
No water circulation in
the system
Device is not functioning
and E09 malfunction
code is flashing on the
screen
Lack of water in the
system
Clogged installation
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 11
Gas valve modulator not
connected
Device is not functioning
and E11 malfunction code
is flashing on the screen
Gas line malfunction
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 15
Fan malfunction
(feedback/ supply)
device is not functioning
and E15 malfunction code
is flashing on the screen
Fan cable
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 17
Temperature difference
between FLOW and
LIMIT NTC (Dual Heating
sensor) faulty
Device is not functioning
and E17 malfunction code
is flashing on the screen
FLOW and LIMIT SENSOR
(dual NTC) faulty
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 20
Heater Over-
temperature
Malfunction, Heater
Heating Temperature
exceeded TSP 81 °C set
value
Device is not functioning
and E20 malfunction
code is flashing on the
screen
Lack of water in the
system
Clogged installation
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.
E 37
At low voltage
Device is not functioning
and E37 malfunction code
is flashing on the screen
Low voltage < 165 VAC
+/- 5% in mains operation
mode OR <182 VAC
+/- 5% in automatic
calibration mode
1-) Reset / restart the device.
2-) If the malfunction persists, call the Authorized Service.