VESTEL WATER HEATER SERVICE MANUAL
VESTEL BEYAZ EŞYA A.Ş. (Air Conditioning Quality Assurance Department)
Page
27
MALFUNCTION
CAUSE OF MALFUNCTION
TROUBLESHOOTING
Water heater is making noise
during heating.
* Heating coil may be covered
with scale.
* It may be the boiling sound of
water while heating coil is
heating.
* Clean heating coil.
* It is a normal process. There is no
need for further actions.
There is water leak in heating
coil and flange unit
* Flange or heating coil gaskets
may be damaged.
* Corrosion may have caused
puncture in flange.
* Replace gaskets.
* Replace flange and gaskets (mount
the flange carefully in both cases).
NOTE: Temperature control is electronic in certain models of water heaters. For this reason, thermostat used for
heat control is digital. It detects heat through a sensor.