Daikin EHYKOMB33AA2 [95/136] Disposal

Daikin EHYKOMB33AA2 [95/136] Disposal
14 Disposal
Installer reference guide
95
EVLQ05+08CAV3 + EHYHBH05AA + EHYHBH/X08AA +
EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1A – 2016.02
Error code Detailed error
code
Description
P4 00 OU: Malfunction of radiating
fin temperature sensor.
Please contact your dealer.
U0 00 OU: Shortage of refrigerant.
Please contact your dealer.
U2 00 OU: Defect of power supply
voltage.
Please contact your dealer.
U7 00 OU: Transmission malfunction
between main CPU- INV CPU.
Please contact your dealer.
UA 00 OU: Indoor/outdoor combination
problem.
Power reset required.
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
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
Error
code
Cause Possible solution
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
14.1 Overview: Disposal
Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Dismantling the system according to the applicable legislation.
3 Treating the refrigerant, oil and other parts according to the
applicable legislation.
INFORMATION
For more details, see the service manual.
14.2 To pump down
Example: To protect the environment, pump down when relocating
the unit or when disposing of the unit.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakage and
other injury will be the result due to abnormal pressure in
the refrigerant cycle.
Pump down operation will extract all refrigerant from the system into
the outdoor unit.
1 Remove the valve lid from liquid stop valve and gas stop valve.
2 Carry out the forced cooling operation.
3 After 5 to 10 minutes (after only 1 or 2 minutes in case of very
low ambient temperatures (<−10°C)), close the liquid stop valve
with a hexagonal wrench.
4 Check with the manifold if the vacuum is reached.
5 After 2-3 minutes, close the gas stop valve and stop forced
cooling operation.
a
c
b
d
d
e
a Gas stop valve

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