4.6 Troubleshooting
FAULT
CAUSE
SOLUTION
Supply pressure too high
− Fit a pressure limiter
Poor hot water production
Flow rate too high
− Fit a flow reducer
There are blockages or deposits in the
− Check and clean as necessary
domestic hot water circuit
− Check the adjustment and state of the
Low water temperature of the generator
DHW temperature probe
There is lime scale or sludge in the
Low water temperature
− Check and clean as necessary
cylinder
There is air in the primary circuit
− Bleed the circuit
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