Daikin Altherma EPGA011-016DV, Руководство по установке для специалистов, Страница: 77 / 104

12 Troubleshooting
Installer reference guide
77
EPGA11~ EABH/9W
Daikin Altherma – Low temperature split
4P556069-1 – 2018.10
a
c
b
a
a Clip
b Magnetic filter/dirt separator
c Air purge valve
2 Install the 2 clips to fix the water filter to the water circuit pipes.
3 Make sure that the air purge valve of the water filter is in the
open position.
4 Open the valve (if equipped) of the water circuit towards the
expansion vessel.
CAUTION
Make sure to open the valve (if equipped) towards the
expansion vessel, otherwise the overpressure will be
generated.
5 Open the stop valves and add water to the water circuit if
needed.
12 Troubleshooting
12.1 Overview: Troubleshooting
This chapter describes what you have to do in case of problems.
It contains information about:
▪ Solving problems based on symptoms
▪ Solving problems based on error codes
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for
obvious defects such as loose connections or defective wiring.
12.2 Precautions when troubleshooting
WARNING
▪ When carrying out an inspection on the switch box of
the unit, ALWAYS make sure that the unit is
disconnected from the mains. Turn off the respective
circuit breaker.
▪ When a safety device was activated, stop the unit and
find out why the safety device was activated before
resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem, call your dealer.
DANGER: RISK OF ELECTROCUTION
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
DANGER: RISK OF BURNING
12.3 Solving problems based on
symptoms
12.3.1 Symptom: The unit is NOT heating or
cooling as expected
Possible causes Corrective action
The temperature setting is NOT
correct Check the temperature setting on
the remote controller. Refer to
the operation manual.
The water flow is too low Check and make sure that:
▪ All shut-off valves of the water
circuit are completely open.
▪ The water filter is clean. Clean
if necessary.
▪ There is no air in the system.
Purge air if necessary. You
can purge air manually (see
"To perform a manual air
purge" on page 72
) or use the
automatic air purge function
(see
"To perform an automatic
air purge" on page 72 ).
▪ The water pressure is >1 bar.
▪ The expansion vessel is NOT
broken.
▪ The valve (if equipped) of the
water circuit towards the
expansion vessel is open.
▪ The resistance in the water
circuit is NOT too high for the
pump (see the ESP curve in
the "Technical data" chapter).
If the problem persists after you
have conducted all of the above
checks, contact your dealer. In
some cases, it is normal that the
unit decides to use a low water
flow.
The water volume in the
installation is too low Make sure that the water volume
in the installation is above the
minimum required value (see
"6.3.3 To check the water volume
and flow rate" on page 24
).
12.3.2 Symptom: Hot water does NOT reach the
desired temperature
Possible causes Corrective action
One of the tank temperature
sensors is broken. See the service manual of the
unit for the corresponding
corrective action.