EF EVO 45 - Page 24

ef cooling Ernst H. Furrer AG Operating manual
7-24 Chapter page Issue: 07 / 2015 Cooling unit EVO 45, 0390.013
Alarm Possible causes Remedy
Alarm 01
LOW PRESSURE
– Refrigerant loss Leakage
– Expansion valve (thermal part /
nozzle insert) defective
– Request Customer Service
Alarm 02
HIGH PRESSURE
– Air-cooled units:
– Air filter mats fouled
– Condenser fouled
– Air supply or removal obstructed
– Air inlet temperature > 45°C
– Intake air and waste air “short
circuited”
– Water-cooled units: Water
supply or recooling system
defective
– Air-cooled units:
– Clean/replace filter mats
– Clean condenser
– Remove obstructions
– Thoroughly ventilate the area with
additional fans
– Change the set-up location
– Request Customer Service
– Water-cooled units: Check water supply
or recooling system
– Request Customer Service
Alarm 03
HIGH PRESSURE SAFETY
– Air-cooled units:
– Air filter mats fouled
– Condenser fouled
– Air supply or removal
obstructed
– Air inlet temperature > 45°C
– Intake air and waste air “short
circuited”
– Water-cooled units: Water
supply or recooling system
defective
– Air-cooled units:
– Clean/replace filter mats
– Clean condenser
– Remove obstructions
– Thoroughly ventilate the area with
additional fans
– Change the set-up location
– If necessary, request Customer Service
– Water-cooled units: Check water supply or
recooling system
– Request Customer Service
Alarm 20
FLOW IN MEDIUM CIRCUIT
INSUFFICIENT
– No water flow or insufficient
water flow
– Flow meter or pump defective
– Clean/replace water filter
– Check hoses for kinks
– Request Customer Service
Alarm 50
PROTECTION AGAINST
FREEZING
– Insufficient water flow (if
compressor is in operation)
– Ambient temperature too low
– Pumps should be operating at temperatures
below 8°C
– Heating should be operating at below 4 °C
– Request Customer Service
Alarm 71
WATER LEVEL INSUFFICIENT
– Water level is too low
– Leakage
– Top up water
– Check the pipes for leaks
– Request Customer Service
If the malfunction cannot be remedied with the aid of this malfunction table or the alarm
no. is not contained in this list, please contact the internally responsible maintenance
specialist or contact our Customer Service:
support@efcooling.com.
Please provide us with the type and serial number of the unit as well as all alarm
numbers that occurred (scroll to the alarm message with the arrow key).
A complete list of the fault messages can be found in Chap. 13.7 PLC manual Troubleshooting
requires qualified personnel. Please contact our Support should there be any questions.