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8.1 General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.
When carrying out an inspection on the switch box of the
unit, always make sure that the main switch of the unit is
switched off.
When a safety device was activated, stop the unit and find out why
the safety device was activated before resetting it. Under no
circumstances can safety devices be bridged or changed to a
value other than the factory setting. If the cause of the problem
cannot be found, call your local dealer.
If the pressure relief valve is not working correctly and is to be
replaced, always reconnect the flexible hose attached to the
pressure relief valve to avoid water dripping out of the unit!
For problems related to the optional solar kit for domestic
water heating, refer to the troubleshooting in the Installation &
Owner's manual for that kit.
8.2 Error code and protection code
shooting table:
9.
IMPORTANT INFORMATION FOR THE
USED REFRIGERANT
This product has the fluorinated gas, it is forbidden to release to air.
Refrigerant type: R410A; Volume of GWP: 2088;
GWP=Global Warming Potential
Model
Factory charge
Refrigerant/kg
tones CO2 equivalent
5kW
2.50
5.22
7kW
2.50
5.22
10kW
2.80
5.85
12kW
2.80
5.85
14kW
2.90
6.06
16kW
3.20
6.68
Attention:
Frequency of Refrigerant Leak Checks
1) For equipment that contains fluorinated greenhouse gases in
quantities of 5 tones of CO2 equivalent or more, but of less than
50 tones of CO2 equipment, at least every 12 months, or where a
leakage detection system is installed, at least every 24 months.
2) For equipment that contains fluorinated greenhouse gases in
quantities of 50 tones of CO2 equivalent or more, but of less than
500 tones of CO2 equipment, at least every six months, or where
a leakage detection system is installed, at least every 12 months.
3) For equipment that contains fluorinated greenhouse gases in
quantities of 500 tones of CO2 equivalent or more, at least every
three months, or where a leakage detection system is installed,
at least every six months.
4) This air-conditioning unit is a hermetically sealed equipment that
contains fluorinated greenhouse gases.
5) Only certificated person is allowed to do installation, operation
and maintenance.
WARNING
NOTE
EEPROM malfunction
Anti-idling protection of water pump
Low temperature protection in heating mode
Communication malfunction between the main controlling
chip and IPDU
T3T4 temperature sensor malfunction
Voltage protection
DC fan motor malfunction
Evaporator high temperature protection in heating mode
Two times of E6 protection in 10 minutes (Recover
when powering off)
Tin temperature sensor malfunction
Tout temperature sensor malfunction
Tb1 temperature sensor malfunction
Tb2 temperature sensor malfunction
Radiator high temperature protection
High pressure protection
Low pressure protection
Outdoor units current protection
Compressor discharge temperature protection
Condenser high temperature protection
IPM mode protection
Typhoon protection
System anti-freezing protection
Flow switch malfunction
High temperature protection in heating mode
Defrosting
Oil return of compressor
Remote control
High temperature difference between water side heat exch-
anger water inlet and water outlet temperatures protection
34


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