User instructions – Dehumidiier TTR 400/400D/500D
EN
B-15
17. Troubleshooting
Error
Diagnosis
Possible cause
Remedy
No dehumidification
Drying air does not show any
temperature increase
Rotor drive defective
Check the rotor drive and repair if
necessary
Ampere meter displays consider-
ably deviating values
Heating unit defective
Replace heating unit
Ampere meter displays deviating
values
Insufficient regeneration air flow
Check free air flow,
check flan,
clean or replace the air filter