Troubleshooting; Items To Be Checked First; When Ventilator Stops Operation - Samsung RHF025EE Service Manual

9. Troubleshooting

9-1 Items to be checked first

1. Check the voltage. Power voltage must be within the range of AC187V~AC253V/60Hz.
2. Claims of the following table are not related to product disorder.
No. Ventilator Operation
Air volume is not controlled while sleeping mode is being
1
operated.
The unit stops operation for a while when operation mode is
2
changed.

9-2 When ventilator stops operation

Trouble
If the product is not turned on
If the remote control is not working
If supply air fan or exhaust air fan are
not working
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Cause
Check electric power content and
wire
Check FUSE disconnection
Check remote control connection
Check fan motor
Check whether outdoor temperature
is below -15˚C
Check outdoor temperature sensor
(SHORT/OPEN)
Explanation
Air volume is controlled automatically when sleep mode is
selected.
While adjusting operation mode, MOTOR stops working. When
mode change completes, MOTOR operation restarts.
Solution
Fix power supply
Replace FUSE
Connect or replace connection wire
of remote control
Check assembly or replace motor
Wait until the outdoor temperature
reaches -15˚C
Replace sensor
Remark
A FUSE is provided in
PBA
Operation at cold places
9-1