TECHNICAL ASSISTANCE SERVICE
45
Circuit pressure too high
Problem with heating system
expansion vessel
Check the efficiency of the
expansion vessel
The safety valve keeps
opening
Check the circuit pressure
Check pressure reducer
functioning
Check pressure reducer setting
Storage cylinder safety valve
problem
Check valve setting and
efficiency
DHW circuit pressure too high
Check DHW circuit pressure
DHW expansion vessel problem
Check the efficiency of the
expansion vessel
The storage cylinder safety
valve keeps opening
DHW pump problem
Check/unseize the pump
Check the electrical connection
between the pump and the control
panel
Storage cylinder temperature
sensor problem
Check the positioning of the
storage cylinder temperature
sensor
The DHW pump is not working
Pressure in DHW circuit too high
Limescale or deposits in storage
cylinder
Check and clean as necessary
Check the setting of the storage
cylinder thermostat
Reduced supply of domestic
hot water
Fit a pressure limiter
ONLY FOR
g
NK MODELS
CAUSE
SOLUTION
FAULT
CAUSE
SOLUTION
FAULT
Содержание Tregi 3/100 NK
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