DeDietrich G25 Manual de Serviço descarregar pdf (Página 46)

DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus 15/02/2011 - 300014279-001-J

10. Messages - Alarms

10.2 Blockage (temporary)



The blockage mode is a normal operating mode and

therefore does not indicate a breakdown but a normal

boiler operating status. A blockage code is likely to signal

a technical problem in the installation or an incorrect

setting.

Code no. Description Checks

BL. AIR

The setting of the parameters is incorrect

. Check the boiler type. Briefly cut the electrical

power supply to the boiler using the On/Off

switch

. Check the wiring.

BL.RET.HIGH.BOI Return temperature > Flow temperature for 10 minutes minimum, after boiler

operating at lower stage

Connection or outlet and return sensor reversed

BL.SPEED The maximum temperature increase speed tolerated in the exchanger has

been exceeded

. The boiler is blocked for 10 minutes.

After 5 successive attempts during a single heating request, the repeated cut-

offs will be saved (the blockage code and the boiler situation at the time of the

blockage)

. However, the boiler does not break down and continues to operate.

Pump

Water flow

Hydraulic pressure

BL.DT BOI BACK he maximum difference tolerated between the outlet and return temperatures

has been exceeded

. The boiler is blocked for 150 seconds. After 10

successive attempts during a single heating request, the repeated cut-offs will

be saved (the blockage code and the boiler situation at the time of the

blockage)

. However, the boiler does not break down and continues to operate.

Pump

Water flow

Hydraulic pressure

BL.INT.MCBA

The setting of the parameters is incorrect or the memory is defective. Check the boiler type. Briefly cut the electrical

power supply to the boiler using the On/Off

switch. Check the wiring.

BL.SMOKE

Flue gas temperature > Max flue gas temperature

Boiler setting

Fouling

BLOCKING b26

Blockage input on the CS bridge terminals, is open, or absence of a bridge

External safety, bridge

BLOCKING bXX

The control box is off

. Check the wiring.

Reset the boiler.

BL.FAN.OFF

Fan defective or incorrectly fitted. After 5 successive blockages, the boiler

goes into safety shutdown

BL.FAN.ON Fan continues to turn after post-ventilation, the boiler goes into safety

shutdown.

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