Symptom: You Are Feeling Too Cold (Hot) In Your Living Room; Symptom: The Water At The Tap Is Too Cold; Symptom: Heat Pump Failure; Glossary - Daikin Altherma EGSQH10S18AA9W Operation Manual

▪ Keep the area around the unit clean.
▪ Keep the user interface clean with a soft damp cloth. Do NOT use
any detergents.
▪ Regularly check if the water pressure indicated on the manometer
is above 1 bar.
Refrigerant
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R410A
Global warming potential value: 2087.5
Periodical inspections for refrigerant leaks may be required
depending on the applicable legislation. Please contact your installer
for more information.
5.2 To find the contact/helpdesk
number
Prerequisite: You switched the permission level to Advanced end
user.
1 Go to [6.3.2]: > Information > Error handling > Contact/
helpdesk number.
6 Troubleshooting
6.1 Symptom: You are feeling too cold
(hot) in your living room
Possible cause
The desired room temperature is
too low (high).
The desired room temperature
cannot be reached.
EGSQH10S18AA9W
Daikin Altherma ground source heat pump
4P351750-1D – 2015.10
Corrective action
Increase (decrease) the desired
room temperature.
If the problem recurs daily, do
one of the following:
▪ Increase (decrease) the room
temperature preset value.
▪ Adjust the room temperature
schedule.
Increase the desired leaving
water temperature in accordance
with the heat emitter type.
6.2 Symptom: The water at the tap is
too cold
Possible cause
You ran out of domestic hot
water because of unusual high
consumption.
The desired DHW tank
temperature is too low.
6.3

Symptom: Heat pump failure

When the heat pump fails to operate the backup heater can serve as
an emergency heater and either automatically or non-automatically
take over the heat load. When auto emergency is activated and a
heat pump failure occurs, the backup heater will automatically take
over the heat load. When a heat pump failure occurs and auto
emergency is not activated, the domestic hot water and space
heating operations will stop and need to be recovered manually. The
user interface will then ask you to confirm whether the backup heater
can take over the heat load or not. When the heat pump fails,
appear on the user interface.
Possible cause
Heat pump is damaged.
INFORMATION
When the backup heater takes over the heat load,
electricity consumption will be considerably higher.
7

Glossary

DHW = Domestic hot water
Hot water used, in any type of building, for domestic
purposes.
LWT = Leaving water temperature
Water temperature at the water outlet of the heat pump.
6 Troubleshooting
Corrective action
If you immediately need domestic
hot water, activate the DHW tank
booster mode. However, this
consumes extra energy.
If you can wait, overrule
(increase) the active or next
scheduled desired temperature
so that more hot water will be
produced exceptionally.
If the problems recurs daily, do
one of the following:
▪ Increase the DHW tank
temperature preset value.
▪ Adjust the DHW tank
temperature schedule.
Example: Program to
additionally heat up the
DHW tank to a preset value
(Storage eco = lower tank
temperature) during the day.
will
Corrective action
▪ Press to view a description
of the problem.
▪ Press again.
▪ Select to allow the backup
heater to take over the heat
load.
▪ Call your local dealer to get
the heat pump fixed.
Operation manual
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