CS-MZ20UD3EA - Panasonic Air Conditioner Service Manual (repair manual). Page 86

Read Panasonic CS-MZ20UD3EA Service Manual online

86 
16.4.18  H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) 
Error Code will not display (no Timer LED blinking) but store in EEPROM 
 
Malfunction Decision Conditions 
  Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) 
 
Malfunction Caused 
  Air short circuit at indoor unit 
  Clogged indoor unit air filter 
  Dust accumulation on the indoor unit heat exchanger 
  2/3 way valve closed 
  Faulty indoor unit fan motor 
 Refrigerant 
shortage 
(refrigerant leakage) 
  Clogged expansion valve or strainer 
  Faulty indoor pipe temperature sensor 
  Faulty indoor unit PCB 
 
Troubleshooting 
 
 
 
 
 
 
 
Page of 103
Display

Click on the first or last page to see other CS-MZ20UD3EA service manuals if exist.

Random: