Mark HCNI 533, Техническое руководство

Страница: 64 / 84

64
8.5.7 EC / EL 0C (Refrigerant Leakage Detection diagnosis and solution)
Description: Define the evaporator coil temp. T2 of the compressor when it just starts running, as
“Tcool”. In the beginning 8 minutes after the compressor starts up, if T2 < (Tcool - 1)°C does not keep
for continuous 4 seconds and compressor running frequency higher than 50Hz does not keep for
continuous 3 minutes, and this situation happens 3 times, the LED displays the failure code and the AC
will turn off.
Recommended parts to prepare or to check:
• T2 sensor
• Indoor PCB
• Additional refrigerant
Troubleshooting and repair:
“Wall” Type Active Line R32 Refrigerant AC: 6. Troubleshooting
[6]-26
Does a problem remain?
YES
YES
YES
NO
NO
6.7.7 EC / EL 0C (Refrigerant Leakage Detection diagnosis and solution)
Description : Define the evaporator coil temp. T2 of the compressor when it just starts running, as “Tcool”.
In the beginning 8 minutes after the compressor starts up, if T2 < (Tcool - 1)°C does not keep for continuous 4
seconds and compressor running frequency higher than 50Hz does not keep for continuous 3 minutes, and this
situation happens 3 times, the LED displays the failure code and the AC will turn off.
Recommended parts to prepare or to check:
• T2 sensor
• Indoo r PCB
• Additional refrigerant
Troubleshooting and repair :
Power off, then restart the unit 2 minutes later.
Put your hands in front
of the indoor air outlet.
Is there some
cool air blowing out from
indoor air outlet?
Check the T2 sensor.
Check system for leakages.
Are any
leakages present?
Is the T2 sensor
securely attached?
Replace the
indoor PCB.
Check system for blockages.
Clear blockages if present.
Repair the leakage and
recharge the refrigerant.
YES