Dimplex BOF4056 User manual

Service Manual
Model Number:
BOF4056
BOF4068
BOF6056
UL Part Number
6909430100
6909430200
6909430300
7400780100R00
In keeping with our policy of continuous product development, we reserve the right to make changes without notice.
© 2014 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 - 7-MAY-14
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 prop-
erty 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
Replacement Parts ....................................................5
Wiring Diagram .......................................................6
Remote Control Receiver Replacement ....................................7
Power Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Switch Replacement ...................................................7
Thermostat Replacement ...............................................8
Potentiometer Replacement .............................................8
Power Cord / Receptacle Replacement ....................................8
Light Assembly Replacement ............................................9
Fan Motor and Fan Housing Replacement ..................................9
Heater Assembly Replacement ..........................................10
Troubleshooting Guide ................................................11
TABLE OF CONTENTS

3
off after 30 seconds. See instructions under
Maintenance Section for relling tank. When this
procedure is complete, the main lamps will illumi-
nate but it will take 30 seconds before the ames
return.
Resetting the Temperature Cutoff Switch
Should the heater overheat, an automatic cut
out will turn the replace off and it will not come
back on without being reset. It can be reset by
switching the On/ Off Switch to Off and waiting 10
minutes before switching the unit back on.
CAUTION: If you need to continuously reset
the heater, unplug the unit and call Dimplex North
America Limited at 1-888-346-7539 for techni-
cal support. Please have your model and serial
number ready when calling.
Remote Control
The On/Off Switch must be in the ‘ON’ ( I ) position in order
for the remote control to operate. There are 3 buttons on
the remote control. (Figure 2)
!NOTE: To operate correctly the remote control must be
pointed towards the heater outlet.
The remote control functions are as follows:
Press once to turn on Flame effect only. This will be
indicated by one beep.
Press once to turn on Full heat and Flame effect. This
will be indicated by two beeps.
Standby - This will be indicated by one beep.
!NOTE: Once the mist has been activated, the unit will
have to be turned Off, using either the momentary button,
on the unit, or the Off button on the remote control, then
back on to return to Level 1 - Logs and Light only operation.
Battery Replacement
To replace the battery:
1. Slide battery cover open on the remote control (Figure
2).
2. Install two 1.5 Volt (AAA) 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 recycling
advice in your area.
Operation
!NOTE: When the engine is used in an environment
where background noise is very low, it may be possible to
hear a sound which is related to the operation of the ame
effect. This is normal and should not be a cause for con-
cern.
!NOTE: Always ensure that the appliance is xed to the
wall in a level position.
The manual controls for the wall mount engine are located
on the bottom of the unit. (Figure 1)
A. On/Off Switch
Supplies power to the engine.
B. Thermostat Control
To adjust the temperature to your individual requirements,
turn the thermostat control backwards all the way to turn on
the heater. When the room reaches the desired tempera-
ture, turn the thermostat knob forward until you hear a click.
Leave thermostat in this position to maintain the room tem-
perature at this setting. For additional heat, turn clockwise
until you hear the click again and the heater will turn on.
C. Mode Selector Switch
Press once to turn on the ame effect. This will be indicated
by an audible “beep”. Although the lights turn on immedi-
ately it will take 30 seconds before the ame effect starts.
• Press again to give ame effect and full heat. This will
be indicated by two “beeps”.
• Press again to return to ame effect only. This will be
indicated by one “beep”.
• Press to put re in to standby mode. This will be
indicated by one “beep”.
D. Flame Intensity Control
Adjusts the intensity of the ame and smoke effect when the
heater has been activated.
Turning the control knob towards you decreases the inten-
sity of the ame and smoke effect. Turning the control knob
away from you will increase the ame and smoke effect.
!NOTE: Give the ame generator some time to react to
changes you may make on the ame control knob.
!NOTE: When the water tank is empty the unit will turn
Figure 2
Figure 1
Battery Cover
Standby
Button
Flame
Button
Heat
Button
B
A
CD
Remote Control
Sensor

4 www.dimplex.com
Maintenance
WARNING: Disconnect power before attempting any
maintenance or cleaning to reduce the risk of re, elec-
tric shock or damage to persons.
Filling the water tank
When the water tank is empty, the ame effect shuts off
and you will hear 2 audible beeps, follow these steps.
CAUTION: Allow at least ve minutes for components to
cool before disassembling the unit to rell.
1. Turn the On/Off switch to the off position (0) (Figure 1)
2. Gently remove the log media and place them carefully
on the ground.
3. Remove the rell container by lifting upwards and
outwards.
4. Rell the container with tap water.
!NOTE: Normal tap water can be used in the Optimyst®
as long as the tap water is not considered to be hard water.
In the event your tap water is hard, you may use softened
water or distilled water with 1/8 tsp of salt (0.5 mL) added to
the water reservoir. (The addition of additional salt should
only be when you notice that the unit is not producing mist
as expected.)
5. Screw the cap back on, do not overtighten.
6. Return the rell container to the sump, with the tank
cap facing down and the at side of the tank facing
outward.
7. Gently place the log media back into position.
8. Turn the On/Off switch to the off position (I). (Figure 1)
If you do not intend on using the unit for longer than 2
weeks, empty and drain the unit of water, and dry all of the
water containing components.
Replacing the Light bulbs
If a large amount of the smoke appears grey or colourless it
may be that one or more of the light bulbs have burnt out.
CAUTION: Allow at least twenty minutes for light bulbs
to cool before touching bulbs to avoid accidental burning of
skin.
1. Leaving the ame effect on, remove the rock media,
tray and water tank and lift out the top cover (Figure 3).
2. View the lamps from a distance in front of the re and
observe which lamp needs to be changed.
3. Turn the unit off, and unplug the engine.
4. Leave the appliance for 20 minutes to allow the lamps
to cool down before removing them.
5. Remove the water tank and sump (Figure 4) by lifting
upwards and placing to the side.
6. Remove the defective bulb, by gently lifting vertically
and disengaging the pins from the lamp holder.
!NOTE: Replacement light bulbs can be obtained by
contacting Dimplex Customer Service at 1-888-346-7539.
7. Carefully insert the two pins of the new bulb into the
two holes in the lamp holder. Push lamp rmly in place.
8. Replace the top cover, rell container and log media.
Cleaning
It is recommended that all of the components that contain
water are cleaned with soap and water on a biweekly ba-
sis. A small brush has been included to assist in cleaning
difcult items/areas, i.e. the transducer.
CAUTION: Do not put plastic components in the dish-
washer.
Filter Cleaning
The air lter can be removed and gently rinsed with water
to clean and dried on a towel before reinstalling.
!NOTE: Replace the lter so that the course black lter is
facing the front of the engine.
Surface Cleaning
Use a warm damp cloth only to clean surfaces of the en-
gine. Do not use abrasive cleaners.
!NOTE: If you need to move the unit ensure that all of
the components that contain water have been emptied be-
fore relocating.
Top
Cover
Figure 3
Transducer
Emitter
Wire Slot
Retaining
Tabs
Water
Reservoir
Figure 4
Sump
Filter

5
Exploded Parts Diagram
6
2
3
4
5
9
10
7
12
1
Replacement Parts
1. Remote Control..................9600385600RP
2. Remote Control Receiver ..........9600580100RP
3. Log Media Assembly
BOF40XX ......................9600720100RP
BOF60XX ......................9600730100RP
4. Heating Assembly (with cutout)......9600680100RP
5. Light Holder Assembly ............9600610100RP
6. Removable Rell Container with Cap 0441440100RP
7. Cap for Rell Container. . . . . . . . . . . . 0441440300RP
8. Top Cover Assembly ..............9600670100RP
9. Water Reservoir (Sump) ..........0441380100RP
10. Fan Assembly . . . . . . . . . . . . . . . . . . . 5300300100RP
11. Fan Housing Assembly . . . . . . . . . . . . 9600540100RP
12. Fan Filter. . . . . . . . . . . . . . . . . . . . . . . 8600300100RP
13. Transducer .....................3800040100RP
14. On/Off Switch ...................9600383500RP
15. 3-Position Switch ................9600383600RP
16. Transformers. . . . . . . . . . . . . . . . . . . . 9600690100RP
17. Potentiometer ...................9600640100RP
18. Thermostat Assembly . . . . . . . . . . . . . 9600620100RP
19. Control Knob . . . . . . . . . . . . . . . . . . . . 9600630200RP
20. Power Board . . . . . . . . . . . . . . . . . . . . 9600590100RP
21. IR Receiver with Lens . . . . . . . . . . . . . 9600630200RP
22. Light Bulbs ............................RB400
23. Plug Kit .........................BOF-PLUGKIT
13 11 14
22
20
17
16
21
18
15
8

6 www.dimplex.com
Wiring Diagram

7
Remote Control Receiver Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Remove the 4 screws around the remote control re-
ceiver attaching it to the unit.
5. Transfer the wire connectors from the terminals on the
original board to the same location on the replacement
board.
!NOTE: Use a at head screwdriver to gently pry
between the end of the connector and the remote control
receiver to release the wires.
6. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Power Board Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Remove the 4 screws around the power board attach-
ing it to the unit.
5. Transfer the wire connectors from the terminals on the
original board to the same location on the replacement
board.
!NOTE: Use a at head screwdriver to gently pry
between the end of the connector and the remote control
receiver to release the wires.
6. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Transformer Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Remove the screws that secure the transformer to the
unit.
5. Transfer the wire connectors from the terminals on the
original board to the same location on the replacement
board.
!NOTE: Use a at head screwdriver to gently pry
between the end of the connector and the remote control
receiver to release the wires.
6. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Switch Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
Figure 5
Front Grille
Transformers
Power Board
Remote Control
Receiver

8 www.dimplex.com
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Locate the defective switch and disconnect the wiring
connections noting their original locations.
!NOTE: A at head screwdriver can be used to gently
pry between the end of the connector and the switch to
release the wires.
5. Depress the retainer clips on the rear of the switch and
push the switch out through the opening.
6. Properly orient and insert the new switch and connect
all of the wiring.
7. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Thermostat Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Remove the knob off of the thermostat, by gently lifting
the bottom forward and pulling down.
5. Depress the retainer clips on either side of the thermo-
stat to slide it out of the assembly.
6. Disconnect the wiring connections noting their original
locations.
!NOTE: A at head screwdriver can be used to gently
pry between the end of the connector and the switch to
release the wires.
7. Install the knob onto the new thermostat and slide the
thermostat back into the assembly ensuring that it has
“clicked” into place.
8. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Potentiometer Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
3/8” (10mm) Wrench
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Turn the unit so that the underside of the potentiometer
can be seen.
5. Loosen the securing nut, to allow the potentiometers
slide out.
6. Disconnect the wiring connections noting their original
locations.
!NOTE: A at head screwdriver can be used to gently
pry between the end of the connector and the switch to
release the wires.
7. Slide the potentiometer back into the assembly and
tighten the securing nut.
8. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Power Cord / Receptacle Replacement
Tools Required: Philips head screwdriver
Flat head screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
3. Remove the 4 screws that secure the front grill to the
cassette housing. (Figure 5)
4. Locate the cord and disconnect the wiring connections
noting their original locations.
!NOTE: A at head screwdriver can be used to gently
pry between the end of the connector and the switch to
release the wires.
5. With needle nose pliers, grasp the cord strain relief
grommet from inside the back of the bottom panel and
push while twisting to remove.

9
6. Install the new cord.
7. Reassemble in the reverse order as above.
Light Assembly Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Disassemble the sump components. (Figure 3)
3. With the unit turned upside down, remove the 2 screws
that hold the light assembly to the unit. (Figure 6)
4. Remove the light assembly and replace with the new
light assembly.
5. Reattach the wire onto the new light assembly.
6. Re-assemble the remainder of the cassette in reverse
order from the instructions above.
Fan Motor and Fan Housing
Replacement
Tools Required: Philips head screwdriver
Flat Head Screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Disconnect and remove the media from the unit and
put them in a safe place.
2. Disassemble the sump components. (Figure 3)
3. Remove the 2 screws that secure the engine assembly
to the unit, located under the sump.
4. Remove the 3 screws that hold the cover onto the fan
housing. (Figure 7)
5. Remove the fan motor out of the housing and discon-
nect the wiring connection located near the bottom of
the housing.
6. If replacing only the motor, attach new motor and reas-
semble the remainder of the cassette in revers order
from the instructions above.
• If replacing the housing, remove the 3 screws attaching
the base to the cassette. (Figure 7)
7. Attach new fan housing base to the cassette.
8. Transfer the lter from the old housing to the new hous-
ing.
9. Reinstall the fan motor and reconnect the wire.
10. Re-assemble the remainder of the cassette in reverse
Figure 6
Figure 7
Figure 8
Heater Assembly
Attachment Screws
Support Plate
Attachment Screws

10 www.dimplex.com
order from the instructions above.
Heater Assembly Replacement
Tools Required: Philips head screwdriver
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: Ensure that all of the components that
contain water have been emptied before performing any
maintenance.
1. Remove the 10 screws that attach the heater assembly
to the support plate (Figure 8).
1. Remove the 4 screws securing the heater support plate
to the unit (Figure 8).
2. Gently drop the support plate and heating assembly
down to access the heating assembly and wire
connections, being careful not to strain any of the
connections.
3. Disconnect the wiring connections noting their original
locations.
4. Install the new heater assembly to the support plate.
5. Reattach the wire connections.
6. Reinstall the heater assembly and support plate.

11
Troubleshooting Guide
PROBLEM CAUSE SOLUTION
General
Circuit breaker trips or fuse
blows when unit is turned on
Short in unit wiring. Trace wiring in unit.
Improper circuit current rating Additional appliances may exceed the current rating
of the circuit breaker or fuse. Plug unit into another
outlet or install unit on a dedicated 15 amp circuit.
Lights dim in room while the unit
is on
Unit is drawing close to circuit current
rating
Move the unit to another outlet or install unit on a dedi-
cated 15 amp circuit
Power cord gets warm
(if using the BOF-PLUGKIT)
Normal Operation The power cord may get slightly warm to the touch
when the heater is on
Defective power cord Replace power cord if cord gets hot to the touch.
Unpleasant smell when unit is
used.
Dirty or stale water. Clean the unit as described under maintenance.
Appearance
Fireplace does not turn on
Manually
Improper operation Refer to Operation Section
No incoming voltage from the electrical
wall socket
Check Fuse/Breaker Panel
Defective 3 Position Switch Replace 3 Position switch
Fireplace does not turn on with
the Remote Control
Improper operation Refer to Operation Section
The batteries in the remote control are
dead.
Install new battery into the remote control
Defective remote control Replace Remote Control
Defective remote control receiver Replace remote control receive
Defective IR sensor Replace IR sensor
The ame effect will not start Switch A is in the ‘ON’ (I) position, but
mode Switch B has not been pressed.
(Figure 2)
Press Switch B once for ame effect. (Figure 2)
Low water level. Check the water tank is full and there is water in the
sump.
Water in unit is too cold Allow water to warm to room temperature.
If using distilled or reverse osmosis water,
unit will not produce a consistent mist
Add 1/8 tsp of table salt to water reservoir to intro-
duce electrolytes, only repeat when mist is not being
produced correctly
Check that the fan is operating correctly Replace fan assembly
Ensure that the air lter is clean and dry
Cord is located over emitter on transducer Relocate cord so that mist is free to rise off of trans-
ducer.
Defective Transducer Replace Transducer
The ame effect is too low. Flame effect control knob is set too low.
(Figure 2)
Increase level of ame by turning Control knob C to
the left slowly. (Figure 2)
The ame effect has too much
smoke.
Flame effect setting is too high. Turn the ame effect Control knob “C” to the right until
it is at minimum and slowly turn to the left, about ¼ a
turn, at a time. Give the ame generator some time to
adjust before increasing. (Figure 2)
Mist is not coming out and the
red light by the transducer is
not on
The cord from the power board is not
working
Ensure that the cord is not pinched.
Ensure that the cord is fully inserted into the connec-
tion on the power board.
Mist is coming out fast Filter is missing off of Fan Housing Replace Fan Filter
Mist does not appear to be com-
ing out evenly
Unit is not level Level unit
Media is blocking air ow Rearrange media
A light bulb is burnt out Replace light bulb

12 www.dimplex.com
PROBLEM CAUSE SOLUTION
Heater
Heater is not turning off Improper operation Refer to Operation Section
Defective 3 position switch Replace 3 position switch
Defective thermostat Replace thermostat
Heater is not turning on Improper operation Refer to Operation Section
Loose wiring Trace Wiring
Defective heater assembly Replace heater assembly
Defective 3 position switch Replace 3 position switch
Heater is turning off after a
couple of minutes of operation
Build up of dirt/dust in heater assembly Ensure that exterior intake louvers and rebox cavity
are free of dirt/dust.
Defective Heater Assembly Replace Heater Assembly
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 heater assembly Replace heater assembly
Heater fan turns on but heater
lacks heat
Improper operation Refer to Operation Section
Loose wiring Trace wiring in unit
Defective heater assembly Replace heater assembly
Heating element is glowing red Normal Operation Small glowing sections of the element are considered
normal.
Defective heater assembly If larger glowing sections are causing the heater to trip
the thermal cutout, unplug unit, discontinue use and
replace heater assembly.
Heater fan runs continuously Loose wiring Trace wiring in unit
Defective momentary switch Replace momentary switch
Defective heater assembly Replace heater assembly
Noise
Excessive noise with the heater
on
Dirty heater assembly Ensure that exterior intake louvers and rebox cavity
are free of dirt/dust.
Defective heater assembly Replace heater assembly