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12 Troubleshooting
Installer reference guide
81
ERHQ+ERLQ011~016 + EHBH/X11+16CB
Daikin Altherma – Low temperature split
4P384974-1 – 2015.01
Possible causes
Corrective action
Large domestic hot water tapping
happened recently before the
programmed start-up of the
disinfection function
When the Domestic hot water >
Type > Reheat or
sched. is selected, it is
recommended to program the
start-up the disinfection function
at least 4 hours later than the last
expected large hot water tapping.
This start-up can be set by
installer settings (disinfection
function).
When the Domestic hot water >
Type > Scheduled only is
selected, it is recommended to
program a Storage eco 3 hours
before the scheduled start-up of
the disinfection function to
preheat the tank.
The disinfection operation was
stopped manually: with the user
interface displaying the DHW
home page and its user
permission level set to Installer,
the
button was pressed
during disinfection operation.
Do NOT press the
button
while the disinfection function is
active.
12.4
Solving problems based on error
codes
When a problem happens, an error code appears on the user
interface. It is important to understand the problem and to take
countermeasure before resetting the error code. This should be
done by a licensed installer or by your local dealer.
This chapter gives you an overview of all error codes and the
content of the error code as it appears on the user interface.
For a more detailed troubleshooting guideline for each error, please
see the service manual.
12.4.1
Error codes: Overview
Error codes of the indoor unit
Error code
Detailed error
code
Description
A1
00
Zero cross detection problem.
Power reset required.
Please contact your dealer.
AA
01
Backup heater overheated.
Power reset required.
Please contact your dealer.
UA
00
Indoor unit, outdoor unit
matching problem.
Power reset required.
7H
01
Water flow problem.
89
01
Heat exchanger frozen.
8H
00
Abnormal increase outlet
water temperature.
Error code
Detailed error
code
Description
8F
00
Abnormal increase outlet
water temperature (DHW).
C0
00
Flow sensor/switch malfunction.
Please contact your dealer.
U3
00
Under floor heating screed
dryout function not completed
correctly.
81
00
Leaving water temperature
sensor problem.
Please contact your dealer.
C4
00
Heat exchanger temperature
sensor problem.
Please contact your dealer.
80
00
Returning water temperature
sensor problem.
Please contact your dealer.
U5
00
User interface
communication problem.
U4
00
Indoor/outdoor unit
communication problem.
EC
00
Abnormal increase tank
temperature.
HC
00
Tank temperature sensor
problem.
Please contact your dealer.
CJ
02
Room temperature sensor
problem.
Please contact your dealer.
H1
00
External temperature
sensor problem.
Please contact your dealer.
89
02
Heat exchanger frozen.
A1
00
EEPROM reading error.
AH
00
Tank disinfection function not
completed correctly.
89
03
Heat exchanger frozen.
Содержание Altherma EHBH/X11+16CB
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