Worcester GREENSTORE Instruction Manual page 40

What to do if a fault occurs
High pressure switch (HP)
Possible cause 1: Insuffi cient primar y fl ow over the heat pump.
Action: 1. Press the Ackn. button.
2. Check that the heating system pump has not
3. Check that all the valves are open. Radiator ther-
4. Possibly increase the speed of the heating system
Possible cause 2: The fi lter on the primar y circuit is blocked.
Action: 1. Press the Ackn. button.
2. Check the fi lter.
3. Clean the fi lter if necessary.
Possible cause 3: Air in the primar y circuit.
Action: 1. Press the Ackn. button.
2. Check whether there is air in the radiators/under-
3. Fill the heating system and vent if necessary.
Electric heater (EK)
(Shown as Electrical cassette in the menu display)
Possible cause 1: The electric heater miniature circuit-breaker has
tripped.
Action: 1. Press the Ackn. button.
2. Reset the miniature circuit-breaker button on the
3. Contact the Technical Support Department if the
Possible cause 2: The electric heater's overheat protection has
tripped.
Action: 1. Press the Ackn. button.
2. Reset the overheat protector (circuit-breaker 4)
3. Check that the fi lter on the primary circuit is clean.
stopped.
mostat valves should be fully open and underfl oor
heating systems should have at least half of the
coils fully open.
pump.
fl oor circuit.
heat pump (circuit-breaker 3) by pushing up the
toggle switch.
miniature circuit-breaker trips again.
by pressing in the button on the electric heater's
protective casing. The circuit-breaker is reset
when you hear a clicking sound.
Increase the speed of the heating
system pump:
Use a screwdriver or a coin to increase
the speed of the heating system pump.
Turn one step anti-clockwise.
The miniature circuit-breaker button
for the electric heater can be found
under the heading Fuses and reset
buttons on the heat pump.
The most frequent cause for the over-
heat protection tripping is a poor fl ow
through the primary circulating pump,
which can be due to air in the primary
pump or a blocked fi lter.
40
ALARM (HP)
High press. switch
060822 16:08:15
Info Ackn.
Note
ALARM (EK)
Electrical cassette
060822 16:08:15
Info Ackn.
Note