Diagnostics for Tristol Manual Fill
Water not filling Tristor
Check main cold isolation valve is not closed
Check Over Fill Box fuse spur is switched on
Check consumer unit has not tripped
Check service valve is open on filling loop, close valve once filled to F&E indent line and cap off with
1/2”caps supplied
Check continuity across Float Switch wires when raising Float Switch
Check two port valve is open when Float Switch is in down position. Raise the float to close valve.
White lifter on the side of the actuator should move back and forward when opening and closing valve
with float
No water flow through hot tap
s
Check main cold isolation valve is not closed
Check Over Fill box fuse spur switch is switched on
Check domestic two port valve is open when Float Switch float is in down position. Raise the float to
close valve. White lifter on the side of the valve should move back and forward when opening and
closing valve with float.
Check water level in F&E Tank has not activated float switch, if over filled then drain to F&E Tank level
indent line
Check blend valve is not blocked at ports
No hot water temperature through hot taps
Check cylinder stat is set to 70C to 80C
Check flow to coil is at temperature
Check bottom immersion heater fused spur are switched on (if used)
Check high limit stat has not tripped inside immersion heater (if used)
Check immersion heater regulating stat is set to 73C (if used)
Check water level inside F&E tank. The water level must always be at indent line to submerge coil heat
exchanger with water
Change Blend valve if all above have been checked
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Summary of Contents for Tristor MF Series
Page 1: ...Tristor MF Installation Guide ...
Page 19: ...19 NOTES ...