Grant DuoWave Series - 8.1 Intermittent Water Discharge

Fault Finding Guide
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8.1 Intermittent Water Discharge
Intermittent Water Discharge from T & P Valve
Expansion Vessel
Charge Reduced
Test for correct operation. If water is still
discharging, contact a competent Engineer
Thermostat Failure
Test Vessel and
Recharge or Replace
Immersion Thermostat
Failure
Primary Cylinder
Thermostat
Faulty T & P
Valve
Repair or Replace
Immersion Thermostat
Repair or Replace
Thermostat
Replace T & P
Valve
No
Yes
Yes Yes Yes
No No
8 Fault Finding Guide