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11
ENGLISH
Troubleshooting
Problem
Explanation/Solution
The ventilator does not operate
Check a power failure.
Check the sub power supply is on.
The air does not come out from the
air outlet
Check whether dust filter or heat exchange element is blocked by dust.
In case of dust accumulation, it may decrease the efficiency of the ventilator.
Clean the dust filter and the heat exchange element frequently.
Check whether the air intake or outlet is blocked by dust.
Remove all dust in the air intake.
Water drops from the air intake
Check whether the ventilator is operated in By-Pass mode during heating.
When heating, make sure to operate the ventilator in Heat-EX mode.
RHF_025EE_IB_E_27511_1.indd 11
2007-04-18 ソタネト 5:20:46