Faults And Troubleshooting - NeoRe TG TX Series User Manual

rd digit
- No fault
- Faulty outdoor temperature sensor – the sensor is disconnected
- Faulty outdoor temperature sensor – the sensor is short-circuited
- Faulty building temperature sensor – the sensor is disconnected
- Faulty building temperature sensor – the sensor is short-circuited
- Faulty DHW temperature sensor – the sensor is disconnected
6 - Faulty DHW temperature sensor – the sensor is short-circuited
- Faulty storage tank temperature sensor – the sensor is disconnected
8 - Faulty storage tank temperature sensor – the sensor is short-circuited
If the value of the rd digit is not , some of the sensors are defective and the quality of temperature control may be
reduced. However, the operation of the heat pump is uninterrupted.
th digit
- No fault
- Faulty pool temperature sensor – the sensor is disconnected
- Faulty pool temperature sensor – the sensor is short-circuited
- Faulty secondary circuit temperature sensor – the sensor is disconnected
- Faulty secondary circuit temperature sensor – the sensor is short-circuited
If the value of the th digit is not , some of the sensors are defective and the quality of temperature control may be
reduced. However, the operation of the heat pump is uninterrupted.
.

Faults and troubleshooting

If the heat pump signals any of the critical errors (any of the first two digits is not ), it stops operating. The following
text describes typical causes of these errors and how to correct them. If the application of these procedures is not
successful, contact a service organization, which will take care of your problem.
During the operation of the heat pump, cooling of the heat exchanger of the outdoor unit causes it to freeze. When
the evaporator is frozen, the outdoor unit automatically evaluates this state and starts the defrosting process. The
frequency of defrost cycles depends on several factors, the most important of which are air temperature, humidity
and required power.
During the evaporator defrosting process, the evaporator is reheated using the energy stored in the heating water
and at the same time the fans start running at full speed, which dries the evaporator. During this process, you can
see water vapour rising from the evaporator, which may seem like the unit is burning. However, in this case, it is not
a dangerous state but a normal operating condition, so do not disconnect the outdoor unit from the power supply.