Dimplex BLF7451 Service Manual Download Page 16

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PROBLEM

CAUSE

SOLUTION

PART NUMBER

Heater

Heater is not turning on, but

flame effect is still function

ing

Improper operation

Refer to Operation Section

Loose wiring

Trace wiring in unit

Defective display/control board

Replace the display/control board

3001640100RP

Defective Heating Element

Replace Heating Element

2200510700RP

Heater is turning off after a

couple of minutes of opera-

tion

Improper operation

Refer to Operation Section

Build up of dirt/dust in Heater

Assembly

Ensure that exterior intake louvers and

firebox cavity are free of dirt/dust.

Defective Heating Element

Replace Heating Element

2200510700RP

Heater emits an odor

Normal Operation

Normal operation is when the heater emits

an odor for a brief period after the heater is

initially turned on. The heater is burning off

any dust accumulated during manufacturing

or operation.

Defective Heating Element

Replace Heating Element

2200510700RP

Heater fan turns On but

heater lacks heat

Improper operation

Refer to Operation Section

Loose wiring

Trace wiring in unit

Defective Heating Element

Replace Heating Element

2200510700RP

Heating element is glowing

red

Normal Operation

Small glowing sections of the element are

considered normal.

Defective Heating Element

If larger glowing sections are causing the

heater to trip the thermal cutout, unplug

unit, discontinue use and replace the heat-

ing element

2200510700RP

Heater fan runs continu-

ously

Loose wiring

Trace wiring in unit

Defective switchboard

Replace the switchboard assembly

3001520100RP

Defective Blower/Fan

Replace Blower/Fan

5300160300RP

Noise

Excessive noise with the

heater on

Dirty Heater Assembly

Ensure that exterior intake louvers and

firebox cavity are free of dirt/dust.

Defective Blower/Fan

Replace Blower/Fan

5300160300RP

Grinding or excessive noise

with the heater off

Flicker rod hitting or rubbing

against internal components

Ensure rod is straight and mounted properly

in the bracket, spinning freely away from

other components. Replace if necessary.

Defective Flicker Motor

Replace Flicker Motor

2000220100RP

Summary of Contents for BLF7451

Page 1: ...th America Limited Dimplex North America Limited 1367 Industrial Road Cambridge ON Canada N3H 4W3 1 888 346 7539 www dimplex com REV PCN DATE 00 5 JAN 16 IMPORTANT SAFETY INFORMATION Always read this manual first before attempting to service this fireplace For your safety always comply with all warnings and safety instructions contained in this manual to prevent personal injury or prop erty damage...

Page 2: ...r death OPERATION 3 MAINTENANCE 4 EXPLODED PARTS DIAGRAM 5 REPLACEMENT PARTS LIST 5 WIRING DIAGRAM 6 PREPARATION FOR SERVICE 7 INSTRUCTIONS FOR REMOVING FROM WALL 7 Surface Mount 7 Flush Mount Complete In wall 8 SWITCHBOARD REPLACEMENT 8 RELAY BOARD REPLACEMENT 9 LED DRIVER BOARD REPLACEMENT 9 AD DC ADAPTER REPLACEMENT 10 DISPLAY CONTROL BOARD REPLACEMENT 10 FLICKER MOTOR REPLACEMENT 11 FLICKER RO...

Page 3: ...eeze or a F Freeze on the display G Brightness Changes the brightness of the lights in the unit Adjusted by repeatedly press ing the corresponding button on the remote Indicated by the second digit on the Floating Display changing to show H high and L OPERATION Figure 1 WARNING This electric firebox must be properly in stalled before it is used The unit can be controlled by either the manual contr...

Page 4: ...n this manu al an authorized service representative should perform any other servicing low H Sleep Timer The Sleep Timer can be set to automatically shut off the fireplace after a preset time from 30 minutes to 8 hours To set the timer press the timer button on the remote repeatedly until the desired time is displayed The Floating DisplayTM will display the different times as it is adjusted Once t...

Page 5: ...100RP 9 Flame LED Light Strip Amber 3 per unit 3000830200RP 10 Switch Board 3001520100RP 11 Remote Control 6700520200RP 12 Media LED Light Strip RGB 6 per unit 3001570300RP 13 Thermistor 3001560400RP For Mod 0 send instruction sheet 7214470100 with thermistor 14 Relay Board 3001630100RP 15 LED Driver Board controls 2 LED strips 3000810100RP 16 LED Driver Board controls 1 LED strip 3000810200RP 17 ...

Page 6: ...RING DIAGRAM AC DC ADAPTER RELAY BOARD SWITCH BOARD DISPLAY CONTROL BOARD THERMISTOR LED STRIPS RGB MEDIA FLAME LED STRIPS AMBER CUTOUT THERMAL FLICKER MOTOR BLOWER MOTOR LED STRIPS RGB FLAME M M ELEMENTS LED DRIVER BOARDS ...

Page 7: ...ION If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin NOTE Only required for replacement of the power cord or removal from service CAUTION Follow Preparation for Service instructions before proceeding Mounting The fireplace may be mounted in one of 2 meth ods Surface Mount Flush Mount completely in the...

Page 8: ...place Figure 7 CAUTION The unit should be supported while remov ing the screws to prevent the unit from falling 3 Remove the fireplace out of the opening by slightly lift ing and pulling forward 4 Carefully lay the unit down on a solid flat surface with the front of the unit facing up NOTE If the surface you are using as a work area is a finished surface that is prone to scratches i e hardwood flo...

Page 9: ...Transfer the wiring connections from the existing re ceiver to the new relay board NOTE Using a flat head screwdriver gently pry be tween the end of the connectors and the board to release the wires 5 Remove the relay board off the plastic mounts by pinching the plastic mounting tabs with needle nose pliers Pull the old board off 6 Line up the holes on the board and gently press the new board onto...

Page 10: ... wires that are attached to the display control board Figure 12 NOTE Using a flat head screwdriver gently pry between the end of the connectors and the board to release the wires 7 Remove the four screws that secure the AC DC adapter bracket to the controls assembly 8 Install the new AC DC adapter and install all wiring con nections 9 Reassemble in the reverse order as above CAUTION When re instal...

Page 11: ...ast 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin Tools required Phillips head screwdriver Short handled Phillips head screwdriver CAUTION Follow Preparation for Service instructions before proceeding 1 Remove the decorative acrylic ember bed pieces from the media tray which lies along the bottom of the inte rior Partially Reflective Glass A medium size...

Page 12: ...ge to persons CAUTION If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin Tools required Phillips head screwdriver Needle nosed pliers CAUTION Follow Preparation for Service instructions before proceeding 1 Remove the decorative acrylic ember bed pieces from the media tray which lies along the bottom of ...

Page 13: ...ck or damage to persons CAUTION If unit was operating prior to servicing allow at least 10 minutes for lights and heating elements to cool off to avoid accidental burning of skin Tools required Phillips head screwdriver Needle nosed pliers CAUTION Follow Preparation for Service instructions before proceeding 1 Remove the decorative acrylic ember bed pieces from the media tray which lies along the ...

Page 14: ... the glass forward and lift out Carefully place the glass aside in a safe location 4 Remove the left cover panel The panel is secured to the unit with two screws on the bottom surface 5 Locate the thermistor attached to the standoff secured to the top panel of the unit and cut the tie wrap to allow removal of the thermistor from the unit 6 Loosely wrap the provided tie wrap through the hole in Top...

Page 15: ... remote control 6700520200RP Defective display control board assembly Replace the display control assembly 3001640100RP Flame Frozen Loose wiring Check wiring connections Defective Flicker Motor Replace Flicker Motor 2000220100RP Defective display control board assembly Replace the display control assembly 3001640100RP Flame is not visible Loose wiring Check wiring connections Flame LED light asse...

Page 16: ...er fan turns On but heater lacks heat Improper operation Refer to Operation Section Loose wiring Trace wiring in unit Defective Heating Element Replace Heating Element 2200510700RP Heating element is glowing red Normal Operation Small glowing sections of the element are considered normal Defective Heating Element If larger glowing sections are causing the heater to trip the thermal cutout unplug u...

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