Solving Problems Based On Error Codes; Error Codes: Overview - Daikin Altherma ERLQ004-006-008CA Reference Manual

Possible causes
Large domestic hot water tapping
happened recently before the
programmed start-up of the
disinfection function
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.
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 outdoor unit
Error code Detailed error
code
A5 00
E1 00
E3 00
E5 00
E6 00
E7 00
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
Corrective action
When the Domestic hot water >
Type > Reheat or Reheat +
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.
Do NOT press the button
while the disinfection function is
active.
Description
OU: High pressure cooling/Peak
cut/ freeze protection problem.
Please contact your dealer.
OU: PCB defect.
Power reset required.
Please contact your dealer.
OU: Actuation of high pressure
switch (HPS).
Please contact your dealer.
OU: Overheat of inverter
compressor motor.
Please contact your dealer.
OU: Compressor startup defect.
Please contact your dealer.
OU: Malfunction of outdoor
unit fan motor.
Please contact your dealer.
Error code Detailed error
code
E8 00
EA 00
H0 00
H3 00
H6 00
H8 00
H9 00
F3 00
F6 00
FA 00
JA 00
J3 00
J6 00
L3 00
L4 00
L5 00
12 Troubleshooting
Description
OU: Power input overvoltage.
Please contact your dealer.
OU: Cool/heat switchover
problem.
Please contact your dealer.
OU: Voltage/current sensor
problem.
Please contact your dealer.
OU: Malfunction of high
pressure switch (HPS)
Please contact your dealer.
OU: Malfunction of position
detection sensor.
Please contact your dealer.
OU: Malfunction of compressor
input (CT) system.
Please contact your dealer.
OU: Malfunction of outdoor
air thermistor.
Please contact your dealer.
OU: Malfunction of discharge
pipe temperature.
Please contact your dealer.
OU: Abnormal high pressure
in cooling.
Please contact your dealer.
OU: Abnormal high pressure,
actuation of HPS.
Please contact your dealer.
OU: Malfunction of high
pressure sensor.
Please contact your dealer.
OU: Malfunction of discharge
pipe thermistor.
Please contact your dealer.
OU: Malfunction of heat
exchanger thermistor.
Please contact your dealer.
OU: Electrical box temperature
rise problem.
Please contact your dealer.
OU: Malfunction of inverter
radiating fin temperature rise.
Please contact your dealer.
OU: Inverter instantaneous
overcurrent (DC).
Please contact your dealer.
Installer reference guide
67