Riello AMW P User Instructions page 22

USE
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faults requiring intervention of the Technical Support Service
If any of these faults occurs:
— the power cable is too hot or damaged
— a strange noise is heard during operation
— either the cut-out, a fuse or grounding switch is tripping
all the time
— a switch or a button is not operating properly
— user smells burnt
— water leakage from indoor unit
An accurate inspection of equipment components is required.
— set the main switch to "Off"
— immediately contact R Technical Support Service.
Normal noise during operation
During normal operation, the equipment may make particular
noise linked to settling, expansion of the materials or refrigerant
flow. This type of noise should not be considered a fault:
— ticking due to expansion or shrinking of materials upon
temperature changes
— hiss due to refrigerant cycle inversion when changing op-
erating mode and toggling between Cooling and Heating
or during defrost
— swish similar to water flowing due to the refrigerant gas
flowing in the unit
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