INDICATOR LIGHTS
Mains electricity indicator:
OFF : No mains electricity to the appliance ON : Mains electricity is connected to the
appliance
Central heating demand indicator:
OFF : No demand for heat to the central heating circuit
ON : Central heating demand
FLASHING SLOW : Ignition lockout (once per second)
FLASHING FAST : Appliance fault (other than ignition (five times per second) lockout)
Domestic hot water demand indicator:
OFF : No demand for domestic hot water ON : Domestic hot water demand
FLASHING FAST : Air flow fault (RSF). Flue gas spillage
(OF)
(five times per second)
Central heating and domestic hot water demand indicators:
BOTH FLASHING SLOW : Overheat cut-off
(once per second)
Flame detection indicator:
OFF : Burner off
ON : Burner on
Fig. 2. Controls. |
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electricity |
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indicator |
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Operating | CH temperature | DHW temperature | Sealed system pressure |
switch | control knob | control knob | gauge |
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