A SERVICE OF

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PROBLEM
The LED Display is showing “E5”
POSSIBLE CAUSES
Low Voltage Protection
SOLUTIONS
Unplug for 10 minutes and then
turn on the unit. If “E5”
is still dis-
played, contact customer service.
TROUBLESHOOTING (CONT.)
The LED Display is showing “H8”
The backup water tank is full
Drain the water tank
If the “H8” is still displayed after the
water tank has been emptied, con-
tact customer service.
The LED Display is showing “F1
The LED Display
is showing “F2 ”
The room air temperature sensor
malfunction.
The tube temperature sensor
malfunction.
Please inform the maintenance
man to maintain
Please inform the maintenance
man to maintain
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