Specifications

Fault finding
11
Subject to change without notice DehuTech 2400
Malfunction Possible cause of trouble Corrective action
None, or reduced dehumidification
capacity
Filter clogged
Electrical heater faulty
Airflow reduced
No rotation of rotor
Internal leakage in unit
Altered air volumes
Altered reactivation temperature
Air leakage
Clean or replace filters
Check fuses
Check openings and dampers
Check belt tensioning
Check sealings and springs
Measure and check air volumes
Check reactivation heater
Check panels and check seals
Main fuse faulty Fan faulty
Too large air volume
Rotor does not rotate
Reactivation heater faulty
Check fans and motors
Check air volumes and dampers
Check drive motor
Check reactivation heater
Dehumidifier does not start No control circuit
Faulty control signal
Phase fault
Fuse for controls faulty
Check control fuses
Check external start/stop signal
Check main fuses and phase
sequence
Check electrical components
Rotor does not rotate Drive belt is slipping
Drive belt broken or worn
Rotor jammed
Drive motor faulty
Check belt tensioning
Replace drive belt
Check centre shaft, rim of rotor
Replace complete gear motor
No dry- or wet air volume Filter clogged
Fan faulty
Phase fault
Ducts blocked
Clean or replace filters
Check fan, motor and impeller
Check main fuses and phase
sequence
Check dampers and ducts