6
8. TRoUBLe SHooTInG
If problems persist contact Hyco Technical dept on 01977 517555.
9. SpecIFIcATIonS
SyMpToM
poSSIBLe cAUSe
SoLUTIon
Water constantly flows
from pressure relief valve
Water pressure is too
high (above 4 bar).
Fit pressure Reducing
Valve Kit (Hyco Kit SF4).
Water flows from
pressure relief valve
during heating cycle only
Heated water cannot
expand back up inlet pipe
due to obstruction.
Fit expansion Vessel Kit
(Hyco kit SF3).
Water is not heated
1. Thermal cut-out has
tripped.
1. See section 6. check
heater is correct way
up (pipes at top).
2. element has failed.
2. Replace element. See
section 6 for access to
element.
3. Thermostat has failed.
3. Replace thermostat.
Small volume of hot
water
1. Unit upside down.
1. Re-install correct way
up.
2. Thermostat set too
low.
2. Increase thermostat
setting.
3. Thermostat fault.
3. Replace thermostat.
Water appears to leak
from heater
1. poor connections to
pipework.
1. check plumbing
connections, especially
those to inlet and
outlet.
2. element gasket leak.
2. refit gasket, tighten
flange bolts evenly. Do
not over tighten. See
section 6 for access to
element.
Supply
230V ~ 50Hz
power
2kW
Tank capacity
SF10K – 10 Litres
SF15K – 15 Litres
Tank Material
Vitreous enamel lined steel
dimensions
(h x w x d)
SF10K 410 x 310 x 280 mm
SF15K 530 x 310 x 280 mm
pressure relief valve setting
6 bar
Thermal cutout
Manual reset
