8-3. Current release control
The compressor frequency is controlled so that the outdoor unit input current does not exceeds cur-
rent limit value set according to the outdoor temperature.
The compressor frequency returns according to the operation mode, when the current becomes low-
er than the release value.
¢ Model: AOHG54KRTA
Operation mode Outdoor temp. (Ta) Trigger condition Release condition
Cooling
52°C ≤ Ta 4.5 A 4.0 A
50°C ≤ Ta < 52°C 5.5 A 5.0 A
46°C ≤ Ta < 50°C 6.5 A 6.0 A
42°C ≤ Ta < 46°C 7.5 A 7.0 A
2°C ≤ Ta < 42°C 8.5 A 8.0 A
Ta < 2°C 10.0 A 9.5 A
Heating
20°C ≤ Ta 6.5 A 6.0 A
16°C ≤ Ta < 20°C 7.0 A 6.5 A
12°C ≤ Ta < 16°C 8.0 A 7.5 A
2°C ≤ Ta < 12°C 8.5 A 8.0 A
Ta < 2°C 10.0 A 9.5 A
8-4. Indoor unit fan motor over temperature protection
When satisfy the following conditions, the protection works.
• After the 90 seconds from the fan operation, detect less than 300 rpm for 10 seconds.
• IPM trip protection works.
• Current overload protection works.
When detecting the above condtion, recheck the condition after 6 minutes. When count the twice,
the protection works.
• Protection contents
Reduce the static pressure 20 Pa. When it does not dissolve even the minimum static pressure
condition, work the following operation.
– Fan motor error displayed when less than 300 rpm for 10 seconds is detected after the 90 sec-
onds from the fan operation.
– Fan stop 40 seconds when IPM trip protection works.
– Fan stop 50 seconds when corrent overload protection works.
8-5. Compressor temperature protection
When the compressor temperature sensor detects higher than the trigger condition below, the com-
pressor is stopped. When the compressor temperature sensor detects the release condition, the pro-
tection is released.
Trigger condition 108°C
Release condition
80°C
(3 minutes after compressor stop)
8-3. Current release control - (04-27) - 8. Various protections
CONTROL AND
FUNCTIONS
CONTROL AND
FUNCTIONS
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