Fujitsu ARXG24KMLA Service Instruction

8-5. Indoor unit fan motor over temperature protection
¢ Compact cassette type
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.
¢ Slim duct and Medium static pressure duct types
When satisfy the following conditions, the protection works.
• After the 90 seconds from the fan operation, detect less than 200 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 200 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.
8-6. 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)
8-5. Indoor unit fan motor over temperature protection - (01-37) - 8. Various protections
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS

Fujitsu ARXG24KMLA Specifications

General

Brand	Fujitsu
Model	ARXG24KMLA
Category	Air Conditioner
Language	English