J.E. StorkAir WHR 950 Mode D'emploi page 40

12.2 WHR Malfunctions List
Complaint/malfunction
No complaint
All off
High intake air temperature during summer
Low intake air temperature during winter
Little or no intake air
Little or no exhaust air
shower stays wet too long
Too much noise
air
Condensation leak
Three-position switch does not work
Indications
Bypass running
Filter soiled
Bypass does not run
flashing A5
flashing A7
Power on
No power supply
Bypass remains closed
Bypass remains open
Fan not running
Fan running
Fan not running
Fan running
Supply or exhaust fan
Bypass
Sucking sound
Whistling sound
Airflow sound
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Display Inspection
Bypass
FiLtEr/A1 Filter
Bypass
A3 PTC sensor intake in
A4 PTC sensor exhaust in
E3 PTC sensor exhaust out
A5 Set "P52" to "0"
A7 Set "P53" to "0"
Board fuse defective
Main board defective
Power cut
Bypass
A3 PTC sensor intake in
A4 PTC sensor exhaust in
Bypass
E3 PTC sensor exhaust out
E2 Fan defective
E2 Fan board defective
Main board
E3 PTC sensor
Filters blocked
Valves blocked
Exchanger blocked by dirt
Exchanger frozen shut
PTC sensor deviation
Main board
Fan soiled
Ventilation ducts blocked
Intake reduced due to frost hazard
Supply deactivated due to extreme frost hazard
E1 Fan defective
E1 Fan board defective
Main board defective
Filters blocked
Valves blocked, hood blocked
Exchanger blocked
Fan soiled
Ventilation ducts blocked
E1/E2 Motor defective
Bearings defective
Fan runs at excessive rate. Little
or no intake and exhaust air.
Bypass valve stuck
Bypass motor defective
Siphon does not close/siphon empty
Air leak somewhere
Valves insufficiently opened
Valves do not connect to the duct
Fan runs at excessive rate. Little or no intake and exhaust
Check that connections are correct; see §8
Condensation drain blocked
Condensation drain duct does not run into drip tray
Switch (installation) Three-position switch.
Main board
E1/E2 Fan