evenes Gelbi D 4.2, Руководство по эксплуатации и сборке

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9. Security and Alarms
To ensure maximum safe and trouble-free operation, the heat pump is protected by automatic reset
pressure switches installed in the refrigeration circuit on the low and high pressure sides. The
pressure switches are connected to the controller. If any of the pressure switches are triggered, the
heat pump operation will be stopped and an acoustic signal will sound. Additionally, the compressor
is protected by a hot gas sensor (control sensor).
In the period of time when the tank is heated by another heat source, it is necessary to activate the
STANDBY MODE in the controller - functions protecting against freezing of the condenser, DHW tank
and buffer tank as well as the function protecting against stagnation of the circulation pump (pump
anti-stop) are performed.
Description of the problem Possible cause Solution
Switching off the heat
pump by releasing the
pressure switch high
pressure - notification:
INSTALLATION FAILURE/
PRESOSTAT HP
- Lack of or insufficient water flow
between the heat pump and the
storage tank
- Circulation pump defective or
pump impeller blocked
- Too high preset tank temperature
- High-pressure switch defective
- Clean the bevel filter on the
heat pump heating circuit.
- Vent the heat pump
circulation pump by activating
and deactivating the circulation
pump several times in manual
operation or by removing the
controller and housing parts,
and venting the circulation
pump by unscrewing a bolt in
the body of the circulation
pump.
- Replace the circulation pump.
- Reduce the preset tank
temperature
- Check high-pressure switch
circuit (normally closed)
- Replace the high-pressure
switch.
- Switch off and on the device.
Switching off the heat
pump due to a low
pressure switch triggered
notification:
INSTALLATION FAILURE/
PRESOSTAT LP
- Polluted evaporator
- Low temperature of the suction air
- Frosted evaporator
- Loss of refrigerant
- Defective low pressure switch
- Clean the evaporator
- Provide air at a higher
temperature
- Check defrost settings
- Turn on the manual
evaporator defrost
- Check low pressure switch
circuit (normally closed)
- Check the contact connection
in the terminal block
- Replace the low pressure
switch.
- Switch off and on the device.
Maximum control - Too high set temperature - Lower the set temperature