Cleaning of primary filter and replacement of PM2.5 filter (if any):
1. Open the access cover on the equipment (or on the flange of the air outlet) after entering the ceiling
through the equipment inspection port.
2. Pull out the old primary filter, and the removed primary filter can be flicked gently by hand, or use a
vacuum cleaner to remove dirt and dust. When it is dirty, it can be washed in warm water with deter-
gent (neutral). When the filter is severely dusty or damaged, it should be replaced in time to avoid af-
fecting the service time of the PM2.5 filter. The primary filter is fully dried naturally and then inserted
back into the equipment.
3. The PM2.5 filter cannot be cleaned with water. When it is dirty, it needs to be replaced with a new
one. When replacing the heat exchanger core, remove the dirty PM2.5 filter after opening the quick cali-
per, replace it with a new filter, and install it. Then put the heat exchanger core back in place.
Maintenance of heat exchanger
1. Pull the heat exchanger core out of the body.
2. Use the vacuum cleaner nozzle to suck up dirt and
dust on the surface.
3. After cleaning, install the movement and filter in
place, and close the inspection cover.
Remarks: It is recommended maintenance of the ex-
changer is made every 3 years
Maintenance
适用于
1500-3000
风量设备
YOKO(X)-D40H~D60H
YOKO(X)-D15TG~D30TG
YOKO(X)-D15PMTG~D30PMTG
Filter
PM2.5 Filter
Quick calipers
21
Filter
Filter
Failure diagnose
User can use the unit after trial operation. Before contacting us, you can make self trouble shooting fol-
lowing below chart in case of any failure.
Phenomenon
Possible reason
Solutions
The
airflow volumes both in-
door and outdoor vents drop
obviously
after a period of op-
eration.
1. Dust and dirt blocking the filter
2. PM2.5 filter is severely blocked
Replace or clean the filter
Noise comes from vents
Vents installation are loosing.
Re-tightening
the vents con-
nections
Unit doesn’t work
1. Power loss or power failure
2. Device control fuse protection
3. Equipment thermal relay dis-
connect protection
4. Equipment circuit breaker trip
protection.
1. Repair power
2.
Check whether the control
circuit is short-circuited, and
replace the fuse of the same
specification after repair
3. Fan overheating or overcur-
rent
protection, check whether
the fan is blocked or other rea-
sons
4. The fan is short-circuited or
damaged,
and the fan of the
same specification needs to be
replaced
Failure diagnose
22