Biddle DF Dokumentacja Pobierz pdf (Strona 35)

DF MANUAL FAULTS

Manual version 2.0 (26-10-2012) en-35

See also:

2.7.2 "Control panel settings" on page 18

2.7.3 "External control input" on page 19

2.7.5 "Unit settings" on page 20

2.7.6 "Multiple units operated from one control panel" on

page 21

6.3 "Fuses" on page 39

6.4 "Temperature cut-out" on page 39

The unit (or part of the unit) is

blowing cold air.

The LEDs on the control panel are

flashing.

For electrically heated units:

The temperature cut-out has

turned the unit (or part of the unit)

off to prevent overheating.

w This may indicate a seri-

ous fault that may be

hazardous.

This fault can also occur if the unit

has been powered down for a short

while.

1. Check and reset the tempera-

ture cut-out.

2. Check the fans. If one or more

fans do not work, check:

• the fan wiring;

• control PCB connections

•control PCB fuses

3. If these are okay, then replace

the fan.

Discharge air is not hot enough. For water-heated units:

The supply water temperature is

too low.

Raise the central heating system’s

water temperature.

For electrically heated units:

One or more phases on the power

supply have tripped out.

Check the power supply’s fuses and

electrical connections.

The unit continues to blow hot air. For water-heated units:

The valve has been opened manu-

ally.

Turn the handle to the ‘AUTO’

position.

The unit always blows cold air in

automatic mode.

The temperature sensor is not

working.

1. Check Connector J3 on the con-

trol PCB.

2. Replace the sensor.

If multiple units have been con-

nected to a single control panel:

Units are heating unevenly in auto-

matic mode.

The temperature is set indepen-

dently in each unit.

Configure one unit as a master.

ROBLEM POSSIBLE CAUSE RESOLUTION

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