© JBG-HT (v.2.0)
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INSTRUCTION MANUAL
– HEAT PUMP
It is also possible to set different defrost onset temperatures depending on the outdoor ambient temperature.
You define 5 of these temperatures at 5 ambient temperatures. The points between the declared temperatures
are calculated proportionally.
The defrost ends when the condensation temperature exceeds the temperature set as End.
7. MAINTENANCE, INSPECTION AND REPAIR
7.1. Maintenance notes
The heat pump is a highly automated device. Checks on the condition of the unit should be carried out regularly
during its operation. If the unit is maintained effectively, its operational reliability and service life will be extended.
1 ) Users should pay attention to the use and maintenance of this device: all safety parameters in the
device are set before leaving the factory, do not set them yourself.
2 ) Always check that the power supply and wiring of the device’s electrical system is stable, that the elec-
trical components are not malfunctioning, and repair and replace them in a timely manner if necessary.
3 ) Always check the proper filling of the water system, the water tank safety valve, the liquid level reg-
ulator and the air discharge device to prevent air from entering the system, thereby reducing water
circulation. This may affect the heating performance and reliability of the unit’s operation.
4 ) The unit should be kept clean and dry and well ventilated. Clean the air-side heat exchangers of dust
and lingering leaves regularly with a vacuum cleaner. This will maintain good heat exchange. It is abso-
lutely forbidden to wash the exchanger with a jet of liquid or pressurized gas.
5 ) Do not accumulate any unnecessary things around the unit to avoid blocking the air inlet and outlet.
6 ) If the device malfunctions and the user is unable to solve the problem, inform the company, reporting
the need for service technician assistance.
7 ) Clean the housing only with a damp cloth and a small amount of solvent-free soap. Do not use aerosol
agents, surface scratching agents, dishwashing liquids, or cleaning agents containing solvent or
chlorine.
8 ) It is recommended to use running water to clean the evaporator of the main unit.
7.2. Safety parameters
1 ) If the pressure in the refrigerant circuit rises above the maximum pressure of about 26.5 bar, the
pressure sensor will shut down the heat pump compressor. As soon as the pressure drops to the
appropriate value, the compressor will be activated.
2 ) If the heat pump is turned on with the crankcase temperature below 7°C or after 12 hours without
power, the compressor crankcase heater will turn on to prevent damage to the compressor during
restarting.
3 ) If the temperature measured at the compressor output is higher than the allowed temperature - the
compressor will be turned off.
4 ) The amount of water in the heating circuit is monitored by the water flow sensor. If there is a demand
for heat with the circulation pump running, the water flow will not be recognized - the compressor will
not start.
Summary of Contents for ZHHS-01-10K-R290-V5-M
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