SYSVRF2 WALL IM
8. Test Run
8.1 Things to Note Before Test Run
Indoor and outdoor units are properly installed;
Piping and wiring are correct;
No leakage from the refrigerant piping system;
Water discharge is smooth;
Insulation is complete;
Grounding line has been properly connected;
Piping length, and amount of refrigerant filled have been recorded;
The voltage of the power supply is the same as the rated voltage
of the air conditioner;
No obstacles at the air inlet and outlet of the indoor and outdoor units;
Cut-off valves for the gas and liquid ends of the outdoor unit are
opened;
When the wired/remote controller is used to set the cooling
operations of the air conditioner, check the following items one by
one. If there is a fault, troubleshoot according to the manual.
8.2 Test Run
Note: Once the power is connected, when the unit is turned on or
started immediately after the unit is turned off, the air conditioner
has a protective function which delays the start of the compressor.
Function keys of the wired/remote controller are operating normally;
Room temperature regulation is normal;
LED indicator is on;
Water discharge is normal;
No vibration and strange sounds during operation;
9
Content
E0 Mode conflict
E1 Communication error between indoor and outdoor units
E2
E3
E4
E6
E7
Eb
Ed
EE Water level error
FE
Error
code
Indoor ambient temperature sensor (T1) error
Indoor heat exchanger mid-point temperature sensor(T2) error
Indoor heat exchanger outlet temperature sensor (T2B) error
Fan error
EEPROM error
Indoor EEV coil error
Outdoor unit error
Indoor unit has not been assigned an address
7.4 Error Codes and Definitions
Factory settings
SW2
[ ]
0
SW2
Reserved
Reserved
Clear indoor unit address
SW3_1
SW3_2
In heating mode when the set temperature has been reached,
the fan operates in a 4 minutes off / 1 minute on repeating
cycle
SW4
In heating mode fan does not run when indoor heat exchanger
mid-point temperature is 15°C or below
In heating mode fan does not run when indoor heat exchanger
mid-point temperature is 20°C or below
In heating mode fan does not run when indoor heat exchanger
mid-point temperature is 24°C or below
In heating mode fan does not run when indoor heat exchanger
mid-point temperature is 26°C or below
SW5
Heating mode temperature compensation is 6°C
Heating mode temperature compensation is 2°C
Heating mode temperature compensation is 4°C
Heating mode temperature compensation is 0°C
(use follow me function)
SW6
Auto restart function enabled
Auto restart function disabled
J1
SW7: reserved
In heating mode when the set temperature has been
reached, the fan operates in an 8 minutes off / 1 minute on
repeating cycle
In heating mode when the set temperature has been
reached, the fan operates in a 12 minutes off / 1 minute on
repeating cycle
In heating mode when the set temperature has been
reached, the fan operates in a 16 minutes off / 1 minute on
repeating cycle
[ ]
0
[ ]
1
SW3
SW3
[ ]
0
SW3
[ ]
00
[ ]
01
[ ]
10
[ ]
11
SW4
SW4
SW4
SW4
[ ]
00
[ ]
01
[ ]
10
[ ]
11
SW5
SW5
SW5
SW5
[ ]
00
[ ]
01
[ ]
10
[ ]
11
SW6
SW6
SW6
SW6
0/1 definition of each dial code switch:
means 0
means 1
• All DIP switches (including the capacity DIP switch) have been
configured before delivery. Only a professional maintenance
personnel should change these settings.
• Improper DIP switch settings may cause condensation, noise, or
unexpected system malfunction.
Caution