Heatrae Sadia UTC 99 Fitting Instructions And User Manual page 13

FAULT
Water not heating
No water ow - General
No water ow - Open
Outlet installations
No water ow - Cistern
Fed installations
Water ow gradually
reduces - Cistern Fed
installations
NOTE: Use only Heatrae Sadia approved spare parts. Replacement of
any parts with components not recommended by Heatrae Sadia will
invalidate the guarantee and may render the installation dangerous.
POSSIBLE CAUSES
1. Electrical supply fault
2. Thermal cut-out tripped
3. Thermostat fault
4. Element fault
1. Cold water supply not
turned on
2. Blockage in cold water
supply
1. Open Outlet tapset not
correctly installed
2. Blockage in tapset
1. Blockage in tapset
2. Cistern tank empty
1. Cistern not lling as fast
as outlet ow rate
2. Vent pipe blockage
ACTION
1. Check electrical supply
2. Check cut-out, if
operated reset and check
thermostat operation. If
necessary replace
h / h l
3. Check thermostat
operation, replace if
necessary
4. Check element for circuit
continuity and insulation
resistance. If faulty
replace.
1. Check mains water
supply is on.
2. Check for obstructions.
1. Check water
connections to tapset
2. Check for obstructions.
1. Check for obstructions.
2. Check water supply to
cistern tank is turned on.
Check operation of cistern
oat valve.
1. Check water supply to
cistern tank is turned on
and that inlet ow rate is
equal to outlet ow rate.
Check operation of cistern
oat valve.
2. Check vent pipe for
obstructions, clear as
necessary.
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