Fault finding guide
Fault finding
Identify the problem in the left column, read the cause in the middle column, and follow
the instructions in the right column:
Rotor exchanger is not
running
Fan is not running
Heating is inadequate
Limited air supply
Problem
Driver for the rotor
exchanger is defect or with
incorrect settings. (See
section "Driver for rotor
exchanger", page 29)
Belt is defective
Belt has snapped
Motor is defective
Pulleys are defective
V-belt is defective
Heating system is
defective
Fan is not running, see
problem: "Fan is not
running", above
Filter is dirty/clogged
Damper position incorrect
Probable cause
Contact a technician
Contact a technician
Replace filter according to
instruction "How to service
the filter", page 19
Check the damper
Solution
25