Warnings
Malfunction
identified
Heat pump is rarely
activated while
electric heating
element is operated
almost all the time.
Control panel
failure or display
problem.
Other functions: Contact the customer service
After any maintenance or repair work, check the proper operation of the water heater.
Warranty
Possible cause
• Air temperature outside the
tolerance range
• Malfunction sensor external
aggregate
• Evaporator extremely
contaminated
• No power.
• Malfunction of the panel.
• Malfunction of the control
card.
Use
Servicing
Troubleshooting
• Wait until temperature is back
within the tolerance range
• Inform heating engineer.
• Clean evaporator.
• Check power supply.
• Inspect by using the control
card diodes.
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