CS-TZ60TKEW, CS-TZ71TKEW, CU-TZ60TKE, CU-TZ71TKE - Panasonic Air Conditioner Service Manual (repair manual). Page 108

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108 
18.4.17  H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED 
flashing) 
Malfunction Decision Conditions 
  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is 
operating in heating operation. 
  Phenomena: unit is stopping and re-starting very often in heating mode 
 
Malfunction Caused 
  Indoor heat exchanger thermistor 
  Clogged air filter or heat exchanger 
  Over-bent pipe (liquid side) 
 
Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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