Question about Panasonic CS-S9NKUA Ductless Mini Split Wal Cool Air Conditioner
H99: Indoor heat exchanger anti-freezing protection
Causes: - Insufficient refrigerant;
- Air filter dirty;
- Clogged cross flow fan.
Posted on May 10, 2015
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Posted on Jan 02, 2017
12.11 Freeze Prevention Control 2
• Control start conditions
o During Cooling operation and soft dry operation ? During thermo OFF condition, indoor intake temperature is less than 50°F or ? Compressor stops for freeze prevention control
o Either one of the conditions above occurs 5 times in 60 minutes. • Control contents
o Operation stops
o Timer LED blinks and "H99" indicated
You may need the assistance of a technician. Service manual located here:
Posted on Apr 29, 2015
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