Daikin RHBH04CB [23/28] Maintenance and service
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Daikin RHBH04CB [23/28] Maintenance and service

Daikin RHBX08CB [23/28] Maintenance and service
7 Maintenance and service
User reference guide
23
RHBH/X04~16CB
ROTEX HPSU low temperature Bi‑bloc
4P384968-1B – 2017.04
Tips about DHWtank temperature
▪ Use a weekly schedule for your normal domestic hot water needs
(only in scheduled mode).
▪ Program to heat up the DHW tank to a preset value (Storage
comfort = higher DHW tank temperature) during the night,
because then space heating demand is lower.
▪ If heating up the DHW tank once at night is not sufficient,
program to additionally heat up the DHWtank to a preset value
(Storage eco = lower DHWtank temperature) during the day.
▪ Make sure the desired DHW tank temperature is NOT too high.
Example: After installation, lower the DHWtank temperature daily
by 1°C and check if you still have enough hot water.
▪ Program to turn ON the domestic hot water pump only during
periods of the day when instant hot water is necessary. Example:
In the morning and evening.
7 Maintenance and service
7.1 Overview: Maintenance and
service
The installer has to perform a yearly maintenance. You can find the
contact/helpdesk number via the user interface.
As enduser, you have to:
▪ 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 (GWP) value: 2087.5
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO
2
-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
Please contact your installer for more information.
WARNING
The refrigerant in the system is safe and normally does not
leak. If the refrigerant leaks in the room, contact with a fire
of a burner, a heater or a cooker may result in a harmful
gas.
Turn off any combustible heating devices, ventilate the
room and contact the dealer where you purchased the unit.
Do not use the system until a service person confirms that
the portion where the refrigerant leaks is repaired.
7.2 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.
8 Troubleshooting
8.1 Overview: Troubleshooting
If a malfunction occurs, is displayed on the home pages. You can
press to display more information about the malfunction.
For the symptoms listed below, you can try to solve the problem
yourself. For any other problem, contact your installer. You can find
the contact/helpdesk number via the user interface.
8.2 To check the error history
Prerequisite: Only available if is displayed on the home pages.
1 Go to [6.3.1]: > Information > Error handling > Error history.
8.3 To check the warning history
Prerequisite: Only available if is displayed on the home pages.
1 Go to [6.3.1]: > Information > Error handling > Warning
history.
8.4 Symptom: You are feeling too cold
(hot) in your living room
Possible cause Corrective action
The desired room temperature is
too low (high).
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.
The desired room temperature
cannot be reached.
Increase the desired leaving
water temperature in accordance
with the heat emitter type.

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