22
1.57
TIP unit heaters
Unit heaters with 2-stage three-phase motor / Unit heaters with 1-stage single-phase motor
Installation and operating instructions
Fault
Possible cause
Remedy
Impeller not running
concentrically
Rotating parts unbalanced
Clean the unit, replacing the unit if it is still
unbalanced after cleaning
Please make sure that no balancing clips are
removed during cleaning
Air flow is not warm in
heating mode
Insufficient heating medium
Check heating medium (heating circuit, boiler) and
remedy fault
Air in heat exchanger
Vent heat exchanger
Fan not moving any or too
little air
Air flow is interrupted or disrupted e.g. by dirty
filter or dirty heat exchanger
Restore air passage, change filter and/or replace
heat exchanger
Wrong direction of rotation
Check the direction of rotation of the fan
12 Operational problems
Fan does not rotate when
motor is switched on and
standby light on
Setpoint temperature too low
Raise setpoint
Remote switch contact has switched off
Check remote switch contact, insert jumper if
necessary
Fan does not rotate when
motor is switched on and
standby light off
No power supply to unit
Check fuses in sub-junction box
No control voltage
Check control fuse in switch unit
Cable connection broken
Check cable connections
Fan thermal contact has been triggered
(overheating risk)
Check motor temperature and allow to cool down
if necessary. Clarify the cause of overheating (e.g
blocked motor, intake temperatures too high, dirty
filter);
Switch unit off and on again
Summary of Contents for TIP 54 Series
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