noisy water heat blower type sirroco for webasto

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Patrick4002

Senior Member
Joined
Nov 30, 2019
Messages
130
Location
België
Vessel Name
Lady Penelope
Vessel Make
Trader 54 sunliner
Hello, i have installed a water heat blower in the back bedroom. its heating is great, it has a 3 speed blower, but even on the slow speed if the heating is needed and the blower turns it is the first 10 sec just the air flow that you hear, but then he make also a high pitch tone. the unit is new works on 24v the motor is a rotor with 2 cylindrical fans.
the heater is a central diesel heater with waterpump/ expansion barrel ect. just like a home central heating system
how do i get rid of this tone ?
 

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Replacement under Warranty?
 

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