Dimplex DFOP25 User manual

Service Manual
Model Number
DFOP25
7400400000R00
In keeping with our policy of continuous product development, we reserve the right to make changes without notice.
© 2011 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 - 18-AUG-11
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.

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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
EXPLODEDPARTSDIAGRAM ..........................................7
WIRING DIAGRAM ....................................................8
LOWERASSEMBLYACCESS...........................................9
HEATERASSEMBLYREPLACEMENT ....................................9
ASSEMBLYPARTPICTURES ..........................................10
TROUBLESHOOTINGGUIDE..........................................13
TABLE OF CONTENTS

3
With ame effect in operation, press “C” button to turn 2.
on Half heat. This will be indicated by two beeps.
Press the “C” button a second time to turn on Full heat 3.
with ame effect. This will be indicated by three beeps.
Press the A button to return to ame effect only, (Heat 4.
Off)
Press the “B” button to turn off the ame and heat 5.
functions. This will be indicated by one beep.
!NOTE: Pressing the “C” button once when all functions
are off, both the ame effect and low heat will come on
simultaneously. There will be two beeps
!NOTE: Flame intensity is adjusted by using the
manual control. (“C” on Figure 2). This can not be adjusted
by the remote control.
Battery Information
Unclip the battery cover on the back of the remote1.
control. (See Figure 2)
Install (2) AAA batteries into the remote control.2.
Replace the battery cover.3.
Discard Leaky Batteries: Dispose of batteries in the proper
manner according to provincial or state regulations.
Any battery may leak electrolyte if:
Mixed with a different battery type,•
If inserted incorrectly,•
If all the batteries are not replaced at the same time,•
If disposed of in a replace, •
Or if an attempt is made to charge a battery not•
intended to be recharged.
Thermal Safety Cut-out
A thermal safety cut-out is incorporated in the fan heater
to prevent damage due to overheating. This can happen
if the heat outlet is restricted in any way. If the cut-out
trips, unplug the replace from the socket outlet and allow
approximately 10 minutes before reconnecting. Before
switching the replace back on remove any obstruction that
may be restricting the heat outlet, then continue normal
operation.
If you need to continuously reset the heater, or require after
sales service, disconnect power and contact Technical
Services at www.dimplex.com or call 1-888-DIMPLEX,
(1-888-346-7539).
OPERATION
Manual Controls
The manual controls are located behind the drawer.
(Figure1)
Switch “A” - Controls the electricity supply to the
replace.
!NOTE: This switch must be in the ‘ON’ ( I ) position for
the replace to operate with or without heat.
Switch “B” - Controls the function of the replace.
Press once to the right to turn on ame effect. This will 1.
be indicated by one beep.
!NOTE: Although the main lights operate immediately it
will take a further 30 seconds before the ame effect starts.
Press second time to the right to give ame effect and 2.
half heat. This will be indicated by two beeps.
Press third time to the right to give ame effect and full 3.
heat. This will be indicated by three beeps.
Press fourth time to the right to return to ame effect 4.
only. This will be indicated by one beep.
Press once to the left to turn the ame and heat 5.
functions off. This will be indicated by one beep.
Control Knob “C” - Controls the intensity of the ame
effect. Turning the control knob clockwise increases the
ame effect, turning the control knob counter-clockwise will
decrease the ame effect.
!NOTE: When the water tank is empty the main lamps
go out. See instructions under “Maintenance” – “Filling the
water tank”. When this procedure is complete, the main
lamps will illuminate but it will take 30 seconds, before the
ame effect return.
REMOTE CONTROL OPERATION
On the control panel, Switch A (Figure 1) 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 front ember bed.
The remote control functions are as follows:
Press “A” button once to turn on ame effect only. This 1.
will be indicated by one beep.
Figure 2
Figure 1
A
B
C
A
B
C

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Tips for using your appliance.
Only pull out the drawer when its time to rell the water 1.
tank or change a lamp, otherwise it may lead to excess
water in the sump and reduced ame effect. If this
happens empty the water from the sump as instructed
under ‘Maintenance’.
With the ame setting on minimum the unit will use 2.
approximately 40ml of water per hour and will last 3
times as long than when it is at maximum ame setting.
Do not tilt or move the replace while there is water in 3.
the tank or sump.
Make sure that the replace is on a level oor.4.
The ame control knob ‘C’ (Fig.2) may be turned up or 5.
down to give a more realistic effect.
Sometimes the ames appear more real when the 6.
ame control knob is turned down.
Give the ame generator some time to react to 7.
changes you may make on the ame control knob.
MAINTENANCE
WARNING: Disconnect power before attempting any
maintenance or cleaning to reduce the risk of re,
electric shock or damage to persons.
Changing Lights/Lamps
If a large amount of the smoke appears grey or colorless it
may be that one or more lamps have failed.
You can check for lamp failure as follows:
Leaving the ame effect on, open the drawer fully, 1.
gently pull the drawer fully out by the tab. (Figure 3)
View the lamps from a distance in front of the replace 2.
and observe which lamp needs to be changed.
Put Switch ‘A’ in the ‘OFF’ position, and unplug the 3.
replace from the mains.
Leave the appliance for 20 minutes to allow the lamps4.
to cool down before removing them.
Remove the water tank by lifting upwards and place in5.
a sink.
Remove the sump as described in the Cleaning6.
Section.
Remove the defective lamp, by gently lifting vertically7.
and disengaging the pins from the lamp holder, (Figure
4 and 5). Replace with a Mystic original, 12V, 50W,
Gu5.3 base, 8º beam angle, colored lamp. Purchase
the lamps from your local supplier.
Carefully insert the two pins of the new lamp into the8.
two holes in the lamp holder. Push rmly in place.
(Figure 4 and 5).
Replace the sump and water tank and carefully close9.
the drawer.
Switch on.10.
Filling the Water Tank
!NOTE: When the water tank is empty, ame and
smoke effect shuts off and you will hear 2 audible “beeps”.
Follow these steps to rell:
Press Switch ‘A’ to (0). (Figure 2)1.
Pull out the drawer as far as possible by the tab.2.
(Figure 3)
Remove the water tank by lifting upwards and3.
outwards.
Place the water tank in sink and remove cap, counter-4.
clockwise to open.
Fill tank with ltered tap water with a maximum 5.
hardness of 10 dH only. This is necessary to prolong
the life of the ame and smoke producing unit. In
situations or areas with higher water hardness, the
water should be ltered through a water ltering
system.
!NOTE: Do not use a decalcier.
Screw the cap back on.6.
!NOTE: Do not over-tighten.
Return the tank to the sump, with the tank cap facing7.
down and the at side of the tank facing outward.
Press Switch ‘B’ once to turn on ame effect. (See 8.
manual control section, Figure 2).
Press Switch ‘A’ to ‘ON’ ( I ) position. (Figure 2) 9.
Gently push the drawer back in as far as it will go.10.
Figure 3
Figure 4
Figure 5

5
Cleaning
WARNING: Disconnect power before attempting any
maintenance or cleaning to reduce the risk of re,
electric shock or damage to persons.
We recommend cleaning the following components once
every 2 weeks, particularly in hard water areas:
Water Tank•
Sump and Seal•
Sump lid•
Tank cap and seal•
Air lter•
For general cleaning use a soft clean duster – never use
abrasive cleaners. To remove any accumulation of dust or
uff, the soft brush attachment of a vacuum cleaner should
occasionally be used to clean the heat outlet grill of the fan
replace.
Water tank
Remove water tank, as described earlier, put into sink1.
and empty water.
Using the supplied brush gently rub the inside surfaces2.
of the cap paying particular attention to the rubber ring
in the outer groove and the centre rubber seal.
Put a small quantity of liquid dish soap into the tank,3.
ret the cap and shake well, rinse out until all traces of
dish soap are gone.
Rell with tap water with a maximum hardness of 10 4.
dH only, replace the cap,
!NOTE: Do not over-tighten.
Do not use a decalcier when cleaning the appliance. 5.
This may shorten the lifetime of the smoke unit.
Sump
Press Switch ‘A’ to the ‘OFF’ (0) position1.
Gently pull the drawer out as far as possible. (Figure 3)2.
Remove the water tank by lifting upwards.3.
Disconnect the electrical connector, located on the left4.
side of the sump, by rst loosening the two retaining
screws and gently withdrawing the connector. (Figure
6)
Release the lower sump locking tabs by turning 90º,5.
this allows the sump to be lifted completely from its
location. (Figure 7)
Gently lift up the sump assembly, taking care to keep6.
level so as not to spill any water. Sit the assembly in
the sink. (Figure 8)
Release the two upper sump locking tabs by turning7.
90º, then lift off the sump lid. (Figure 9)
Carefully tilt, as shown, so that the liquid drains out of8.
the sump. (Figure 10)
Put a small amount of washing up liquid into the sump,9.
and using the supplied brush, gently clean all surfaces
including the metal disc and the rubber seal located in
the top grooved surface.
!NOTE: Do not remove the rubber seals. (Figure 11
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10

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and 12)
When cleaned, thoroughly rinse the sump with clean10.
water.
Clean the outlet surface of the sump lid with the brush11.
and ush out thoroughly with water. (Figure 13 and 14)
Reverse the above steps to reassemble.12.
Air Filter
Gently pull the drawer out as far as possible. (Figure 3).1.
Press Switch ‘A’ to the ‘OFF’ (O) position (Figure 2)2.
Remove the tank and place in a sink with the cap3.
facing upwards.
Gently slide upwards the air lter plastic holder. (Figure 4.
15)
Remove the lter combination from the plastic holder.5.
Gently rinse with water in the sink and dry with a cloth6.
towel before returning.
Replace the lter combination making sure that the 7.
course black lter is in contact with the plastic holder.
(Figure 16)
Replace the tank.8.
Press Switch ‘A’ to the ‘ON’ ( I ) position (Figure 2).9.
Close the drawer completely.10.
Figure 11
Figure 12 Figure 13
Figure 14 Figure 15
Figure 16

7
EXPLODED PARTS DIAGRAM
Replacement Parts List
Replacement Part:
Remote Control1. . . . . . . . . . . . . . . . . . .9600385600RP
Remote Control Receiver2. ...........9600384000RP
Heater Assembly3. . . . . . . . . . . . . . . . . .9600384800RP
Sump Pump Assembly4. . . . . . . . . . . . . .9600385000RP
Lid Assembly5. . . . . . . . . . . . . . . . . . . . . .9600383900RP
Transformers (2 in each unit) 6. . . . . . . . .9600384700RP
Halogen Lamps (carton of 5)7. . . . . . . . . .9600384300RP
Power Cord8. . . . . . . . . . . . . . . . . . . . . .9600385500RP
On/Off Switch9. . . . . . . . . . . . . . . . . . . . .9600383500RP
Momentary Switch10. . . . . . . . . . . . . . . . .9600383600RP
6
1
2
3
4
5
8
7
Potentiometer11. . . . . . . . . . . . . . . . . . . . .9600383700RP
Cleaning Brush12. ...................9600384100RP
Power Supply13. . . . . . . . . . . . . . . . . . . . .9600384500RP
Control Knob14. . . . . . . . . . . . . . . . . . . . .9600384900RP
Sump Locator Assembly15. . . . . . . . . . . . .9600385100RP
Lamp Holder Assembly16. . . . . . . . . . . . .9600385200RP
Mist Nozzle Assembly17. . . . . . . . . . . . . .9600385300RP
9-Way Connector (Plug & Cord)18. . . . . . .9600385400RP
Replacement Door Magnet Kit19. . . . . . . .9600490100RP
9
10
11
12
13
14
15
16
17
18

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WIRING DIAGRAM

9
LOWER ASSEMBLY ACCESS
Tools Required: Philip’s head screwdriver
Needle nose pliers.
WARNING: If the replace was operating prior to ser-
vicing, allow at least 20 minutes for light bulbs and heating
elements to cool off to avoid accidental burning of skin.
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
!NOTE: For replacing the Heater Assembly or the
Sump Pump Assembly please skip this section and go to
the corresponding pages for these parts.
For all other parts please proceed with the following instruc-
tions:
Remove the rebox out of the cabinet or wall frame that 1.
surrounds the unit.
Disconnect power before attempting any maintenance.2.
Unplug the replace from the outlet. •
Or turn the breaker off at the electrical panel.•
Remove the 4 screws from the rear-middle panel.3.
(There is an upper, middle and lower panel on the back
of the replace).
Remove the 2 screws on the front lower corners. (1) 4.
on the left and (1) on the right side behind the drawer.
Remove the 2 screws – (1) left and (1) right rear corner 5.
of the LED log set. These screws are inserted directly
into the rubberized material that forms the logs.
Lift the backside of the lower assembly (logs and draw-6.
er) just enough to clear the hidden mounting brackets
located beneath the logs. Slide this entire lower as-
sembly forward a few inches. Disconnect the 3 wires
from the white power cord connected to the terminal
block on the left side. (See Assembly Part Pictures)
!NOTE:Be sure to take note of the original position of
the wires on the terminal block.
Once these wires are disconnected continue to slide7.
this bottom assembly forward and rest it just in front of
the replace chassis.
!NOTE:With this bottom drawer removed you can now
access all parts with the exception of the heater assembly,
which is located on the top panel of the replace.
Identify the part to be replaced and how they are se-8.
cured.
The left side of the drawer has:
2 transformers - Philips head screws•
3 terminal blocks - Philips head screws•
Power Cord - Philips head screws•
The right side of the drawer has:
Remote control receiver/power board - Plastic•
mounting tabs
Stepper board - Plastic Mounting tabs•
Main on/off switch - integral mounting tabs•
(squeeze to release)
3-stage selector switch - integral mounting tabs•
(squeeze to release)
Flame intensity controller - to remove, pull the •
knob off the potentiometer shaft, then using a pair
of needle nose pliers turn the jam nut counter
clockwise through the opening around the shaft.
LED Log set Wire harness plugged into the Re-•
mote Control Receiver - to remove, unplug from
the remote control receiver and remove 5 screws,
– (1) (x4) on each corner and (1) on the front right
side, approximately 3” inches to the left of the
corner screw.
Inside the drawer has:
Halogen Light Assemblies•
Sump Pump Assembly•
Water Reservoir•
Mist Effect Fan/Air Filter •
!NOTE: For removal of components inside of drawer
please see Operation section of this manual.
Remove the wires from the part to be replaced noting9.
their original location.
Release the mounting hardware securing the part, and10.
remove it from it’s location.
Secure the new part into the same location as the11.
original part.
Reconnect the wires according to their original location/12.
conguration.
Re-assemble in reverse order as above.13.
HEATER ASSEMBLY REPLACEMENT
TOOLS REQUIRED: Philip’s head screwdriver
WARNING: If the replace was operating prior to ser-
vicing, allow at least 20 minutes for light bulbs and heating
elements to cool off to avoid accidental burning of skin.
WARNING: Disconnect power before attempting any
maintenance to reduce the risk of electric shock or damage
to persons.
Remove the rebox out of the cabinet or wall frame that 1.
surrounds the unit.
Disconnect power before attempting any maintenance.2.
Unplug the replace from the outlet. •
Or turn the breaker off at the electrical panel.•
Remove the 7 screws, which secure the top panel to3.
the replace from the exterior. (3) on the left side, (3)
on the right side, (1) on the back side of this top panel.
From underneath the heater assembly, mounting panel, 4.
remove the 4 screws that secure the heater assembly
to the rest of the replace.
Disconnect the wires attached to the heater assembly5.
elements and blower motor noting their original location
and reconnect onto the new heater assembly.
Lift the old assembly out of the top heater housing.6.
Line up the new heater assembly and secure with the 47.
original screws from underneath.
Re-attach the 7 screws to the top panel.8.

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ASSEMBLY PART PICTURES
Water Reservoir
Drawer Front
Sump Power Cord
Sump Pump
Log Set
Manual Controls
View of DFOP25 lower assembly - Drawer is open
Left Side View of Lower Assembly - Logs, Sump Assembly and Water Reservoir Removed
Transformers
Sump Assembly Mounting
Bracket
Terminal Blocks
Flame Effect Fan & Air
Filter (Encased in housing)
Halogen Lamps
Power Cord (disconnected)
Right Side View of Lower Assembly - Logs, Sump Assembly and Water Reservoir Removed.
Main Power Switch
3-Stage Manual Control
Switch
Flame Effect Control
Potentiometer
Remote Control Receiver
Voltage Step Down
Circuit Board

11
Terminal Block and Power Cord Connection - Disconnect cord to remove lower assembly
Left Side View with Power Cord Disconnected
3-Stage Manual
Control Switch
Flame Effect Con-
trol Potentiometer
Main Power Switch
Transformers Terminal Blocks
Remote Control Receiver

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Voltage Step Down Circuit Board
Mounted on the inside of
the heater housing, under
the top panel.
Heater Assembly Connections and Terminal Block

13
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.
Unit turns on or off by itself Remote control has a similar frequency to
other remotes in the area.
Replace Remote Control and/or Remote Control Re-
ceiver initialize, where necessary.
Radio frequency disturbance from outside
sources.
Replace remote control and remote control receiver.
Initialize where necessary.
Defective Remote Control Receiver Replace Remote Control Receiver, initialize with
remote control
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 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.
Using unltered tap water. Use tap water with a maximum hardness of 10 dH
only.
Appearance
The ame effect will not start. Main plug is not plugged in. Check plug is connected to wall socket correctly.
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.
Low voltage connector not connected
properly. (Figure 6)
Check that the connector is inserted correctly. (Figure
8)
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 water in the sump may be too high
due to the drawer being opened and
closed a number of times, water tank re-
moved a number of times, or the replace
has been moved.
If water level in the sump is more than 40mm, the
sump should be removed and emptied in the sink.
Metal Disc at the base of Sump might be
dirty (Figure 11)
Clean Metal Discs with soft brush supplied. (Figure 13)
See ‘Maintenance.’ for a step by step procedure.
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)
Main lamps are not working and
there are no ames or smoke,
but heater is still functioning.
There is no water in the tank. Follow instructions under Maintenance, ‘Filling the
water tank’.
Check the plug is connected to wall socket correctly.
Switch ‘A’ (Figure 2) is in the ‘ON’ ( I ) position. Press
switch ‘B’ Fig.2 until you can hear one beep only, for
ame effect.
TROUBLESHOOTING GUIDE

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PROBLEM CAUSE SOLUTION
Heater
Heater is not turning off Improper operation Refer to Operation Section
Defective heater on/off switch Replace heater on/off switch
Defective remote control receiver Replace remote control receiver, initialize remote con-
trol receiver and remote control.
Heater is not turning on Improper operation Refer to Operation Section
Loose wiring Trace Wiring
Defective heater assembly Replace heater assembly
Defective momentary switch Replace momentary 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