Temperature Measurement Regeneration Heater Defective
Check the cables and the sensor.
Check the power supply.
Short circuit check.
Excess Temperature Regeneration Heater
The regeneration temperature is too high.
Check the safety temperature limiter.
Colortronic Service.
Insufficient Temperature Regeneration Heater
The regeneration temperature is too low.
Check the regeneration heater.
The Safety Switch Regeneration Heater Has Been Actuated
Check the heater.
Check the fuses.
Short circuit check of the heater.
Error Bypass Flap
The bypass flap does not close or closes too slowly.
Check the bypass flap.
Error Valve Block
The valve block has not reached the proper position. The main switch is placed in the off position.
Check the position of the valve block. Press the “ACK” key and put the main switch in the on positi-
on immediately. If the valve block has not reached the correct position within 1 minute, the main
switch is again placed in the off position.
Colortronic Service.
Temperature Measurement Outgoing Air Defective
Check cables and sensor.
Temperature Measurement Return Air Defective
Check cables and sensor.
Excess Temperature Return Air
Check cables and sensor.
Check the return air cooler.
64.10-8248GB01
04/02
Dehumidified Air Dryer
Error and error correction 4-7
