Dimplex Prism BLF5051 User manual

Service Manual
Model
BLF5051
UL Part Number
6909520100
7400870000R00
In keeping with our policy of continuous product development, we reserve the right to make changes without notice.
© 2015 Dimplex North America Limited
Dimplex North America Limited
1367 Industrial Road Cambridge ON Canada N1R 7G8
1-888-346-7539 www.dimplex.com
REV PCN DATE
00 - 17-JUL-15
IMPORTANT SAFETY INFORMATION: Always read this manual rst before attempting to service this
replace. For your safety, always comply with all warnings and safety instructions contained in this
manual to prevent personal injury or property damage.

2 www.dimplex.com
Always use a qualied technician or service agency to repair this replace.
!NOTE: Procedures and techniques that are considered important enough to emphasize.
CAUTION: Procedures and techniques which, if not carefully followed, will result in damage to the
equipment.
WARNING: Procedures and techniques which, if not carefully followed, will expose the user to the
risk of re, serious injury, or death.
OPERATION .........................................................3
MAINTENANCE ......................................................4
EXPLODED PARTS DIAGRAM ..........................................5
WIRING DIAGRAM ....................................................6
PREPARA TION FOR SERVICE ..........................................7
INSTRUCTIONS FOR REMOVING FROM WALL ............................7
Surface Mount............................................................... 8
Recessed Mount - Partial In-wall ................................................ 8
Flush Mount – Complete In-wall ................................................. 9
LED LIGHT STRIPS REPLACEMENT .....................................9
LED MEDIA STRIPS REPLACEMENT ....................................10
ELECTRONICS JUNCTION BOARD REPLACEMENT .......................10
FLOATING DISPLAY ASSEMBLY REPLACEMENT ..........................11
LED DRIVER BOARD REPLACEMENT ...................................11
MAIN CONTROL BOARD REPLACEMENT ................................11
RELAY BOARD REPLACEMENT ........................................11
THERMISTOR REPLACEMENT.........................................12
SWITCHBOARD REPLACEMENT .......................................12
ELEMENT REPLACEMENT ............................................13
HIGH TEMPERATURE CUTOUT REPLACEMENT ..........................13
BLOWER/FAN REPLACEMENT .........................................14
POWER CORD REPLACEMENT ........................................14
TROUBLESHOOTING GUIDE ..........................................15
TABLE OF CONTENTS

3
D & E. Thermostat Controls
Adjusts the temperature set point to your individual require-
ments. Once the desired set temperature is reached the
heater will turn off. The heater will cycle on and off to main-
tain the desired set temperature. The default temperature
setting is 72°F (22°C).
→ Adjusted by pressing the to decrease the set point
and the to increase the set point on the unit or the
remote.
• The On Screen Display will indicate the temperature set
point as it is adjusted.
!NOTE: Holding the and the buttons down for
two seconds, on the unit, will change the temperature from
°C to °F, or vice versa.
Disable Heat
If desired, depending on the season, the heater on the unit
can be disabled. The unit will operate in the same fashion,
with remainder of the controls.
Pressing the and buttons on the unit at the same
time and holding for 2 seconds will disable and enable the
heater.
!NOTE: When the heater has been disabled and either
the or the is pressed the On Screen Display will
indicate “--”.
F. Color Themes
Different presets of ambient lighting color combinations
contained in the unit.
→ Changed by repeatedly pressing the corresponding but-
ton on the remote or the unit.
• Cycles through the different preset ambient lighting set-
tings of the unit, this includes different combinations of
colours of the ame base and media lighting.
!NOTE: The last theme of the cycle is a prism where the
unit cycles through a variety of colours. Pressing the
button stops the cycling and holds the unit on the preferred
color, indicated by a “U” - Unfreeze or a “F” - Freeze on the
display.
G. Brightness
Changes the brightness of the lights in the unit.
→ Adjusted by repeatedly pressing the corresponding but-
OPERATION
Figure 1
 WARNING: This electric rebox must be properly in-
stalled before it is used.
The unit can be controlled by either the manual controls
which are located on the upper right of the replace or the
remote (Figure 1 & 12).
The replace is supplied with an IR multifunction remote
control.
!NOTE: To operate correctly, the remote control must be
pointed towards the Floating DisplayTM.
A. Standby
Turns the unit On and Off.
→ Activated by pressing the Standby button on the remote
or the unit.
• The unit will turn on with the same functions that it was
set to when it was turned Off and the intake temperature
will be indicated on the On Screen Display.
!NOTE: When any button is pressed the intake tem-
perature will be displayed on the On Screen Display for 5
seconds.
B. Flame Effects
Turns the ame effect On and Off.
→ Activated by pressing the button on the remote.
C. Heat ON/OFF
Cycles the unit sequentially through the 3 settings: Low
Heat, High Heat and Off.
→ Activated by pressing the button on the unit or the
remote.
• Indicated by the icon and the intake temperature be-
ing displayed on the On Screen Display, for 5 seconds
before turning off.
!NOTE: After the heater is switched off, there is a 60
second fan delay, where the fan will continue running be-
fore turning off.
!NOTE: The unit can be operated in Heat Only Mode.
When the unit is only running with the heater, the icon
will continuously be displayed on the On Screen Display.
!NOTE: The heater may emit a slight, harmless odor
when rst used. This odor is a normal condition caused
by initial heating of internal heater parts and will not occur
again.
Figure 2
A C D E F
Floating
DisplayTM
A
D
B C
E
G
H
F

4 www.dimplex.com
ton on the remote.
• Indicated by the second digit on the Floating Display™
changing to show: “H” (high), and “L” (low).
H. Sleep Timer
The Sleep Timer can be set to automatically shut off the
replace after a preset time (from 30 minutes to 8 hours).
→ To set the timer press the timer button on either the
remote or the unit, repeatedly, until the desired time is
displayed.
• The On Screen Display will display the different times as
it is adjusted. Once the timer has begun, pressing the
button will display the time remaining before the unit
turns Off.
!NOTE: The Sleep Timer can be cancelled at any time
by pressing the button repeatedly until the sleep timer
displays nothing.
Resetting the Temperature Cutoff Switch
Should the heater overheat, an automatic cut out will turn
the heater off and it will not come back on without being
reset. It can be reset by unplugging the unit and waiting 5
minutes before plugging the unit back in.
CAUTION: If you need to continuously reset the heater,
unplug the unit and call technical support at 1-888-346-
7539.
Remote Control Battery Replacement
To replace the battery:
1. Slide battery cover open on the remote control.
2. Correctly install one 3 Volt (CR2032 [longer life] or
CR2025) battery in the battery holder.
3. Close the battery cover.
Battery must be recycled or disposed of properly.
Check with your Local Authority or Retailer for recyc-
ling advice in your area. Battery must be recycled or
disposed of properly. Check with your Local Authority or
Retailer for recycling advice in your area.
MAINTENANCE
 WARNING: Disconnect power and allow heater to cool
before attempting any maintenance or cleaning to reduce
the risk of re, electric shock or damage to persons.
!NOTE: The replace should not be operated with an
accumulation of dust or dirt on or in the unit, as this can
cause a build up of heat and eventual damage. For this
reason the heater must be inspected regularly, depending
upon conditions and at least at yearly intervals.
Partially Reective Glass Cleaning
The partially reective glass is cleaned in the factory dur-
ing the assembly operation. During shipment, installation,
handling, etc., the partially reective glass may collect dust
particles; these can be removed by dusting lightly with a
clean dry cloth.
To remove ngerprints or other marks, the partially reec-
tive glass can be cleaned with a damp cloth. The partially
reective glass should be completely dried with a lint free
cloth to prevent water spots. To prevent scratching, do not
use abrasive cleaners.
Fireplace Surface Cleaning
Use only a damp cloth to clean painted surfaces of the
replace. Do not use abrasive cleaners.
Servicing
Except for installation and cleaning described in this manu-
al, an authorized service representative should perform any
other servicing.

5
EXPLODED PARTS DIAGRAM
Replacement Parts List
12
6
1
2
3
4
17
10
11
7
13
8
16
9
1. Element........................2200510500RP
2. Partially Reective Glass ..........5901920100RP
3. Blower .........................5300260100RP
4. Front Glass .....................5901930100RP
5. Power Cord Mod 0 ...............4100040900RP
Mod A ...............4100190400RP
6. Flicker Motor ....................2000500100RP
7. Flicker Assembly ................5901910100RP
8. Cutout .........................2300201700RP
9. LED Light Panel .................3000830200RP
10. Switch Board....................3001480100RP
11. LED Driver Board ................3000810100RP
12. Remote Control..................6700520200RP
13. Floating Display™ Assembly .......3001470100RP
14. Media LED Light Assembly .........3001330500RP
15. Electronics Junction Board .........3001490100RP
16. Main Control Board ...............3001260200RP
17. Thermistor .....................3001380200RP
18. Relay Board ....................3001360100RP
19. Hardware Kit ....................9600350100RP
20. Large Ice Chunk Media............1400130200RP
21. Small Ice Crystal Media ...........1400150100RP
22. Front Glass Mounting Hardware .... .9600420100RP
OEM Accessory
River Rocks .............................DFS1314
Driftwood Accessory Kit................LF50DWS-KIT
18
15