Read Panasonic CS-E21JB4EA / CU-E21HBEA Service Manual online
61
15.5.14. H98 (Indoor High Pressure Protection)
Error Code will not display (no Timer LED blinking) but store in EEPROM
Malfunction Decision Conditions
• During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60
°C.
Malfunction Caused
• Air short circuit.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Detection error due to faulty indoor fan motor.
• Excessive refrigerant.
• Clogged expansion valve or strainer.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
• Clogged air filter of the indoor unit.
• Dust accumulation on the indoor unit heat exchanger.
• 2/3 way valve closed.
• Detection error due to faulty indoor fan motor.
• Excessive refrigerant.
• Clogged expansion valve or strainer.
• Detection error due to faulty indoor pipe temperature sensor.
• Detection error due to faulty indoor unit PCB.
Troubleshooting
Click on the first or last page to see other CS-E21JB4EA / CU-E21HBEA service manuals if exist.