Panasonic Aquarea B1 Planning And Installation Manual page 115

Appendix
8.2 Troubleshooting
Troubleshooting
The symptoms listed below do not indicate an error function.
Symptom
Water flow noises during operation.
Operation is delayed for some minutes
following restarting.
Water or steam is escaping from the
outdoor unit.
Steam is escaping from the outdoor
unit during heating mode.
The outdoor unit is not functioning.
The system switches itself off.
The heating capacity of the system
is low.
The system is not heating up
immediately.
The deactivated electric booster heater
is automatically switched on.
Operation starts automatically if the
timer has not been set.
Loud coolant noise lasting for some
minutes.
The cooling mode * is not available.
1
Check the following points before contacting Customer Service.
Symptom
The device is not heating or cooling *
1
correctly.
The device is operating in a loud way.
The system is not functioning.
The operating LED is not illuminated
or nothing is being displayed on the
operating unit.
*1 The system is preset for operation without a cooling function. The cooling function can be activated by an authorised installer or service partner.
*2 This display only appears if the cooling function is activated, i.e. if the cooling mode is available.
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Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Cause
• Coolant is flowing through the device.
• The delay involves a protection mechanism for the compressor.
• Water can condense or evaporate on the pipes.
• This occurs when the heat exchanger of the outdoor unit is being defrosted.
• The outside temperature may be outside the permitted temperature range.
• This is caused by the protection mechanism of the system. If the water inlet
temperature is lower than 10 °C, the compressor stops operating and the electric
booster heater is switched on.
• If a heater and floor are being heated at the same time, the water temperature can
fall and the heating capacity can be reduced.
• If the outside temperature is low, the system may need more time to heat up.
• The air inlet or outlet openings of the outdoor unit are blocked by an obstacle, e.g.
due to a pile of snow.
• If the preset water outlet temperature is high, the system may need more time for
heating up.
• The system needs some time to heat up the water if it is still cold.
• This involves a protection function for the heat exchanger in the indoor unit.
• The sterilisation function has been started by the sterilisation timer.
• The cause is a protection function which is triggered during the defrost mode at
outside temperatures of below -10 °C.
• The system is preset for operation without a cooling function.
To be checked
• Set the temperature at the correct level.
• Close the valves of any heating or cooling devices which are not needed.
• Ensure that the air inlet and outlet openings of the outdoor unit are clear.
• The outdoor unit or indoor unit may be tilted.
• Close the cover properly.
• The automatic cutout has been triggered/activated.
• Check whether the electric power supply is in order and that no power outage has
occurred.
Fault codes
Error no. Explanation of error
H12
Inappropriate device capacities
H15 Fault with compressor temperature sensor
H20 Fault with circulation pump
H23
Fault with coolant sensor
H27
Fault with service valve
H28
Fault with solar sensor
H31
Fault with swimming pool sensor
H36
Fault with buffer tank sensor
H38
Fault due to non-matching device brands
H42 Low pressure protection
H43 Fault with the sensor for heatC 1
H44 Fault with the sensor for heatC 2
H62 Fault upstream with the flow monitor
H63
Fault with the low pressure sensor
H64
Fault with the high pressure sensor
H65
Fault with the water circulation during defrosting
H67
Fault with outdoor temperature sensor 1
H68
Fault with outdoor temperature sensor 2
H70
Fault with overload protection for indoor units E-heating element
H72
Fault with hot water tank temperature sensor
H74 Fault with PCB communication
H75 Low water temp. protection
H76 Fault with the PCB communication
H90 Communication fault with indoor/outdoor units
Fault with overload protection for hot water E-heating
H91
element
H95
Fault with incorrect voltage IU - OU
H98
Fault due to high pressure protection
H99
Fault due to frost protection of indoor units heat exchanger
*1 The system is preset for operation without a cooling function. The cooling function can be activated by an authorised installer or service partner.
*2 This display only appears if the cooling function is activated, i.e. if the cooling mode is available.
Aquarea air-to-water heat pumps - Planning and installation manual - 01/2018
Appendix
You will find below the list of fault codes which can be
shown in the display if any problems occur with the
system setting or operation.
If a fault code is shown in the display, as in the example
on the left, then please call the telephone number stated
in the operating unit or a local authorised dealer.
All keys are deactivated, apart from and .
Fault code
Blinking
Error no. Explanation of error
High pressure switch in the outdoor unit
F12
triggered
F14
Incorrect compressor speed
F15
Incorrect speed of the OU fan motor
F16
Fault due to excessive current consumption
F20
Fault due to overload protection of the compressor
F22 Fault due to overload protection of power transistor
F23 Fault due to direct current peaks in the OU
F24 Fault due to problems in the cooling circuit
* Fault due to problems with the switching
1
F25
interval
F27 Fault with the high pressure switch in the OU
F29
Low hot gas superheat
F30
Fault with the inflow temperature sensor
F32
Fault with the room thermostat
F36
Fault with the outdoor temperature sensor
F37
Fault with the return flow temperature sensor
F40
Fault with the hot gas temp. sensor in the outdoor unit
F41
Error in the power factor correction
Error with the heat exchanger sensor in the
F42
outdoor unit
F43 Fault with hot gas temp. sensor in the outdoor unit
Fault with the defrost temp. sensor in the outdoor
F45
unit
F46 Current transformer switching off
F48 Error with evaporator outlet temp. sensor
F49 Fault with bypass outlet temp. sensor in the OU
* Fault due to HP protection cooling in the
1
F95
outdoor unit
* Some error codes may not apply to your model. Please
contact a specialist dealer for clarification.
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