Tekno Point ATHENA R32 A-0732 Installationsanleitungen Seite 105

11.2 Possible causes and treatment of common failure
Fault Condition
The unit doesn't work
The pump is working
but too noisy and the
water is not cycled
Low heating capacity
The compressor
doesn't work
The compressor wor-
ks but too noisy
The fan doesn't work
Compressor works
but not heating
Low water-flow
protection
Excessive discharge
pressure
Low suction pressure
Possible Causes
• Power fault
• Bad connection to the power
• Fuse blow
• Lack water in the system
• There is air in the water circulation
• Any valve in the system is not
open
• Filter stoppage
• Inadequate refrigerant
• Bad insulation of the water system
• Drying filter stoppage
• Air side heat exchanger is uneffi-
cient
• Inadequate water-flow
• Power failure
• Compressor contactor destroyed
• Poor connection
• Overheating protection
• water outlet temperature is too
high
• Inadequate water-flow
• Liquid refrigerant goes into the
compressor
• interior components destroyed
• Inadequate refrigeration oil
• Capacitor damaged
• The fans are not fixed well
• The electromotor burned out
• Contactor destroyed
• Refrigerant leakage
• Compressor fault
• Hydraulic switch destroyed
• Inadequate water-flow
• Too much refrigerant
• Non-condensable gas in the Refri-
geration cycle
• Inadequate water-flow
• Drying filter stoppage
• Lack of refrigerant
• Excessive pressure drop in the
heat exchanger
Treatment
• Turn off the switch, check the Power source
• Find the causes and renovate them
• Replace the fuse
• Check the water make-up device and fill in with
water
• Discharge the air in water system
• Open all valves
• Clean filters
• Leak hunting and fill in standard quantity of
refrigerant
• Improve the heat insulation
• Replace the drying filter
• Clean the heat exchanger
• Clean the water filter
• Check it and solve the problems
• Replace contactor
• Check and renovate it
• Check and solve the problems
• Reset a proper temperature
• Clean the water filter and discharge the air in
the water system
• Check the expansion valve
• Replace the compressor
• Add in adequate refrigeration oil
• Replace it
• Fix it well again
• Replace the electromotor
• Replace the Contactor
• Leak hunting and fill in standard quantity of
refrigerant
• Replace the compressor
• Replace the switch
• Clean the filter and discharge the air
• Draw off the superfluous refrigerant
• Drive the gas out
• Check the circulation and increase the flow
• Replace the filter
• Leak hunting and fill in standard quantity of
refrigerant
• Check the opening of electronic expansion
valve
105