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Rectifying faults
E9 and flashing.
Safety temperature limiter has tripped.
Check Action
1. Is the heating pressure between 1
and 2 bar?
yes: B Top up system.
B Vent appliance.
B Press , does appliance restart???
E9?↓2.
no: ↓2.
2. Is the pump blocked? yes: B Unblock the pump.
If pump won’t start:
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change the pump.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Press , does appliance restart???
E9? ↓3.
no: ↓3.
3. Is lead disconnected from one/both
safety temperature limiters?
yes: B Power OFF the appliance.
B Connect lead.
B Turn ON the appliance.
B Press , does appliance restart???
E9? ↓4.
no: ↓4.
4. B Power OFF the appliance.
B Unplug the connector from the
cut-off device.
B Measure the NTC electrical resist-
ance.
R = ∞?
yes: B Change the over heating cut-off device.
B Connect flue gas safety temperature limiter lead.
B Turn ON the appliance.
B Press , does appliance restart???
E9? ↓5.
no: B Connect flue gas safety temperature limiter lead.
B Turn ON the appliance.
E9? ↓5.
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