Baxi MainEco Heat 15 Wartungshandbuch PDF herunterladen (Seite 56)

56 MainEco Heat 7215845 - 01 (08/14)

11 Troubleshooting

11.1 Error Codes

Status

signal

Description Remedial actions by service

engineer

1 flash

green

Temperature

protection

• Maximum flow temperature

exceeded,

•Flow temperature rise rate too

high,

• Excessive difference between

flow and return te mperature

•Check system circulation &

pump operation

•Check de mands for boiler

operation (switched live operation)

•Check temperature setting

•Check temperature sensors in boiler

2 flashes

green

Shutdown input

•BL terminals on HMI are open

circuit

• If condensate pump is wired

to these terminals check

operation of condensate pump

•Check wiring to BL terminals

(link present or connections to

external device correct)

3 flashes

green

Flame loss

•No flame detected during

operation

•Check gas supply is turned on

and gas is available if on a

pre-payment meter

•Check flue condition

4 flashes

green

Communication

fault

•Bad connection or wiring fault

• Internal communication fault

•Check wiring/connections

between boiler and User Interaction

Contoller and box

• If necessary replace control/fan assy

5 flashes

green

Parameter fault

• Parameter error or faulty PU

• Configuratio n error or PCB fault

•Replace PU and recommission

•Replace control/fan assy

6 flashes

green

Miscellaneo us

• Internal fault in combustion

control unit

•Replace combustion control unit

Operation status and error codes are displayed on the “chimney

sweep” button (3) on the control panel. In normal operation this

button is illuminated and goes off for a time once periodically.

When normal operation is interrupted for some reason this

button will turn off and flash on a number of times periodically.

The colour and number of flashes displayed is dependent on

the boiler status or fault condition.

The orange LEDs will flash at EVERY heating demand.

The number of flashes will correspond with the output

of the boiler as shown in the table. e.g. 4 orange flashes

= 21kW. This is normal and does not indicate a fault

condition.

“Error” or auto reset conditions (Green flashes on

“chimney sweep”)

The following TABLE describes the conditions that may result in

a blocking signal being displayed.

The boiler will try to re-start several times, and normal operation

will resume once the blocking condition has been eliminated.

Should the conditions persist the boiler may go into lock-out

(see following section)

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