12
replacement at the same time as the other MVHR Filters.
Please contact the UK sales office for further details, contact details can
be found on the back of this booklet.
Please note:
If the external air is drawn in via a geothermal Heat Exchanger, a class
G4 Filter should be installed in the intake tower.
12. Cleaning the Recuperator
The Recuperator should be cleaned by a specialist technician
as and when required depending on the level of contamination,
but at least every 2 years. Contact details for servicing by
Xpelair approved technicians can be found on the back of this
booklet. The cleaning procedure is as follows:
1. Disconnect the MVHR from the mains supply
2. Remove the top cover
3. Remove the Retaining Bracket located in front of the Heat Exchanger by removing the screw
4. Carefully pull the Recuperator outwards using the black plastic
strap around the Heat Exchanger, keeping it horizontal to avoid damaging the EPP housing
5. Thoroughly rinse the Recuperator with lukewarm water and allow all the water to drain off
6. Residual moisture will evaporate when the MVHR is operated
7. Carefully insert the cleaned Recuperator, keeping it parallel to avoid damaging the EPP housing
8. Replace the Recuperator Retaining Bracket and retaining screw
9. Switch the mains supply back on
10. The MVHR is ready to recommence operation
13. Troubleshooting
Important:
Servicing of the MVHR may only be carried out by a qualified service technician.
Contact details for servicing by Xpelair approved technicians can be found on the back of this booklet.
13a. Fault locating table
SYMPTOM
CHECK
POSSIBLE CAUSE
Fan does not work
The mains supply is on
-
Mains supply interrupted
-
Fuse has blown:
-
Mains supply fuse or supply cord plug fuse
-
Supply air Fan defective
-
Exhaust air Fan defective
-
Fan blade catching on inner EPP housing
-
Contact fault on Fan control or power leads
-
Control PCB defective
Supply air and/or exhaust
air flow rate is too low
Filters
Room air valves
Outside grilles
-
Filter service period has expired
No water coming through
Condensate Drain Tube
Correct connection
Connection to dwelling Building
Waste System and not directly
outside
-
No water in siphon
-
Condensate water drain blocked
Noise coming from the
MVHR unit
Fans are noisy
-
Increased air resistance due to contami-
nated Filters and/or Heat Exchanger
-
Obstruction in the duct system
