Daikin EHYKOMB33AA2A [83/108] Disposal
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Daikin EHYKOMB33AA2A [83/108] Disposal

Daikin EHYKOMB33AA2A [83/108] Disposal
14 Disposal
Installer reference guide
83
CHYHBH05+08AA + EHYKOMB33A
Daikin hybrid for multi heat pump – heat pump module
4P471761-1A – 2017.10
Minimum required flow during defrost operation
05+08 models 9l/min
If the 7H‑01 error persists, the unit will stop operation and the user
interface will display an error code that needs to be reset manually.
Depending on the problem, this error code is different:
Error code Detailed error
code
Description
7H 04 The water flow problems mainly
occurred during domestic hot
water operation. Check the
domestic hot water circuit.
7H 05 The water flow problems mainly
occurred during space heating
operation. Check the space
heating circuit.
7H 06 The water flow problems mainly
occurred during cooling/defrost
operation. Check the space
heating/cooling circuit.
Additionally, this error code might
be an indication of frost damage
to the plate heat exchanger. In
that case, contact your local
dealer.
INFORMATION
Error AJ-03 is reset automatically from the moment there is
a normal tank heat-up.
INFORMATION
Error EC-04 is reset automatically from the moment the
domestic hot water tank is preheated to a sufficiently high
temperature.
INFORMATION
If a U6‑36 error occurs, press the gas boiler’s On/off
button.
INFORMATION
If a U4‑00 error occurs, the indoor unit cannot
communicate with the outdoor unit. When the plate heat
exchanger of the indoor unit is freezing, the pump of the
indoor unit will be forced ON to prevent freeze-up.
Error codes of the gas boiler
The controller on the gas boiler detects faults and indicates them on
the display by error codes.
If the LED is flashing, the controller has detected a problem. Once
the problem is rectified, the controller can be restarted by pressing
the button.
Following table shows a list of error codes and the possible
solutions.
Error
code
Cause Possible solution
10, 11,
12, 13,
14
Sensor fault S1 ▪ Check wiring
▪ Replace S1
Error
code
Cause Possible solution
20, 21,
22, 23,
24
Sensor fault S2 ▪ Check wiring
▪ Replace S2
0 Sensor fault after
self-check
Replace S1 and/or S2
1 Temperature too
high
▪ Air in installation
▪ Pump is NOT running
▪ Insufficient flow in installation
▪ Radiators are closed
▪ Pump setting is too low
2 S1 and S2
interchanged
▪ Check cable set
▪ Replace S1 and S2
4 No flame signal ▪ Gas tap is closed
▪ No or incorrect ignition gap
▪ Gas supply pressure is too low or
fails
▪ Gas valve or ignition unit is NOT
powered
5 Poor flame signal ▪ Condensate drain blocked
▪ Check adjustment of gas valve
6 Flame detection
fault
▪ Replace ignition cable and spark
plug cap
▪ Replace ignition unit
▪ Replace boiler controller
8 Incorrect fan speed ▪ Fan catching on casing
▪ Wiring between fan and casing
▪ Check wiring for poor wire contact
▪ Replace fan
29, 30 Gas valve relay
fault
Replace boiler controller
14 Disposal
NOTICE
Do not try to dismantle the system yourself: the dismantling
of the system, treatment of the refrigerant, oil and other
parts must comply with applicable legislation. Units must
be treated at a specialised treatment facility for reuse,
recycling and recovery.
14.1 Overview: Disposal
Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Bringing the system to a specialized treatment facility.
INFORMATION
For more details, see the service manual.

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