61 PB
TROUBLESHOOTING
Malfunction Analysis
Malfunction Possible Reasons How to solve
"E4 indoor air outlet temperature sen-
sor failure/air blow out over
heat in electric heat mode"
"Indoor air outlet temperature sensor
open circuit or short circuit;
Indoor lter gets dirty or something
blocks the air intake."
"Check the sensor connection. If the
sensor is broken, replace with a new
one.Clean the lter and clean the air
way." See gures 703 and 704.
E5 Outdoor coil temperature sensor
failure.
Outdoor coil temperature sensor open
circuit or short circuit
Check the sensor connection. If the
sensor broken, replace with a new one.
See gure 703.
E8 Overheat protection/defrosting "Indoor fan failure/dirty lter/refrig-
erating system failure/indoor coil
temperature sensor failure"
Check the indoor fan/clean lter/rell
refrigerant/replace indoor coil sensor.
See gure 705 -710
E9 High pressure protection. "Outdoor fan failure/refrigerating sys-
tem failure/high pressure switch fail-
ure/outdoor coil temp sensor broken"
"Check outdoor fan/refrigerating pipe
system/high pressure switch/outdoor
coil temp sensor."
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