Table of Contents
Advertisement
Troubleshooting
Control unit diagnostics
Code Description
E41
Flow limiter
Diagnosis
Diagnosis without display on the control unit
Fault
Possible cause
Unit operates con-
Inadequate refrigerant fill-
stantly but without
ing
cooling effect
Filter dryer blocked
Ice on the suction
The preselected super-
line
heating is incorrect
Increased noise
Lines vibrating
development
Thermostatic expansion
valve hisses
Compressor noisy
Low oil level inside
One or several refrigerant
the compressor
or oil leaks in the refriger-
ant circuit
Mechanical compressor
damage
Oil sump heater faulty
30
(cont.)
Possible cause
Inadequate throughput in-
side the hydraulic circuit
Note
The message is automati-
cally acknowledged until
three fault messages in
one hour occur for the first
time.
Measures
Check differential pressure
switch, circulation pump and
water filter
Measures
Top up refrigerant
Replace the filter dryer
Increase the superheating
setting
Check refrigerant level
Check line retainers (if in-
stalled)
Top up refrigerant
Check filter dryer
Check compressor mounts
Compressor bearing worn;
replace compressor
Identify and repair leaks
Check compressor and re-
place, if required
Check oil sump heater and
replace, if required
Advertisement
Table of Contents
