Riedel P030 - Page 42

MALFUNCTIONS / TROUBLESHOOTING ENGLISH Translation of the Original
42 454522.68.07-01-E
27.06.2012
Fault Display Malfunction / Cause Remedy
Fault due to low pressure
- Ambient temperature too low Increase ambient temperature
- Water temperature too low Increase water temperature
- Water volume too low
Filter dirty
Shut-off valve closed
Clean filter, replace if necessary
Check shut-off valve
- Sensor has tripped
Refrigerant shortage due to leaks in
refrigeration circuit
- Refrigerant shortage
- Expansion valve defective
The elimination of malfunctions in the
refrigeration cycle may only be
performed by qualified personnel !
- Permanent formation of bubbles in
sight glass
Call customer service!
F6
After the cause of the low-
pressure fault has been
eliminated, the alarm is
automatically reset.
The compressors and fans are
enabled after a delay of 180 sec.
Low-pressure limiter
- Sensor has tripped
Refrigerant shortage due to leaks in
refrigeration circuit
- Refrigerant shortage
- Expansion valve defective
The elimination of malfunctions in the
refrigeration cycle may only be
performed by qualified personnel !
- Permanent formation of bubbles in
sight glass
Call customer service!
F7
After the cause of the low-
pressure fault has been
eliminated, the alarm is
automatically reset.
The compressors and fans are
enabled after a delay of 180 sec.
F8
Condenser air filter dirty Replace condenser air filter