Dimplex CDFI-BX1000 User manual

Service Manual
Model UL Part Number
CDFI-BX1000 6909910100
CDFI-BX1500 6910370100
7401070000R00
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 .........................................................3
Wiring Diagram .......................................................4
Exploded Parts Diagram ................................................5
Relay Board Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Heater Assembly Replacement ...........................................7
Troubleshooting Guide .................................................8
Table of Contents

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Operation
The heater can be controlled by remote, or the tethered
controller through the Opti-myst Cassette. Please refer to
cassette User's Guide for details.
! NOTE: The Opti-myst Pro Box Heater cannot be operated
independently from the Opti-myst Cassette (no heat only
mode).
Resetting the Temperature Cuto󰀨 Switch
Should the heater overheat, an automatic switch will turn the
heater o󰀨 and it will not come back on without being reset. The
temperature cuto󰀨 switch can be reset by disconnecting power
to the unit, waiting 5 minutes and reconnecting power to the
unit.
CAUTION: If you need to continuously reset the heater,
disconnect power to the unit and call Glen Dimplex Americas
at 1-888-346-7539 for technical support. Please have your
model and serial number ready when calling.
Maintenance
Opti-myst Pro Box Heater Surface Cleaning
To remove ngerprints or other marks, the exterior nish can be
cleaned with a damp cloth with a mild detergent. The surface
should be completely dried with a lint free cloth to prevent water
spots.
Servicing
Except for installation and cleaning described in this manual,
an authorized service representative should perform any other
servicing.
! NOTE:
The heater 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.

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Neutral
Live
Live
Heat BOX
Neutral
+24V
12mm 12mm 12mm
Wiring Diagram
CDFI-BX1500
JUNCTION BOX
120V
POWER SUPPLY
PRO BOX
RELAY BOARD CDFI500-PRO
CDFI1000-PRO
WHITE-NWHITE-N
WHITE-N WHITE-N
BLACK-L
BLACK-LBLACK-L
BLACK-L
GREEN-G
GREEN-G GREEN-G
GREEN-G
Block Diagram for CDFI-BX1500

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Exploded Parts Diagram
Replacement Parts List
1. Heater Assembly
CDFI-BX1000 ..................2203610300RP
CDFI-BX1500 ..................2203610600RP
2. Relay Board ....................3001890100RP
CDFI-BX1000 MOD - include ......8501580100RP
3. Media Tray
CDFI-BX1000 ..................1028280100RP
CDFI-BX1500 (2) ...............1031170100RP
1
2
3
5
6
4. Front Glass
CDFI-BX1000 ........................FG1000
CDFI-BX1500 ........................FG1500
5. Hole covers (set of 4)* ............9601740100RP
6. Glass Hardware .................8800930159RP
* CDFI-BX1500 will require 2 packs, as there are 6 hole
covers in total
CDFI-BX1500 Pictured
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Relay Board Replacement
WARNING: Disconnect power before attempting
any maintenance or cleaning to reduce the risk of
electric shock or damage to persons.
CAUTION: If unit was operating prior to servicing
allow at least 10 minutes for lights and heating
elements to cool o󰀨 to avoid accidental burning of
skin.
Tools required: Phillips head screwdriver
1. Remove the front glass by pulling it up and out.
Ensure that it is kept in a safe place during the
service.
2. Remove any media on the tray, and lift out the
tray.
3. Remove the Opti-Myst cassette in order to access
the relay board at the bottom left side of the unit.
For the CDFI-1500BX, only the cassette on the
left needs to be removed. If necessary, disconnect
the power supply wires from the cassette, as well
as the heater wire.
4. Remove the cover plate by unscrewing the four
screws that hold it in place. (Figure 1)
5. Disconnect the wires from the relay board, noting
their original locations. It can be helpful to take
a picture of the relay board before the wires are
disconnected in order to keep track of each wire’s
place.
6. Unscrew the four screws that secure the board to
the stando󰀨s. (Figure 2)
! NOTE: On the CDFI-BX1000 with no MOD des-
ignation, these will instead be snap-in stando󰀨s.
The snap-in stando󰀨s will need to be cut, and the
new board will need to be installed using self-
adhesive stando󰀨s.
7. Properly orient the new relay board and screw it
back into place.
8. Reconnect the wires in their original locations.
9. Reassemble the unit in the reverse order as
above
Figure 1
Figure 2

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Heater Assembly Replacement
WARNING: Disconnect power before attempting
any maintenance or cleaning to reduce the risk of
electric shock or damage to persons.
CAUTION: If unit was operating prior to servicing
allow at least 10 minutes for lights and heating
elements to cool o󰀨 to avoid accidental burning of
skin.
Tools required: Phillips head screwdriver
Side cutters
! NOTE: While not necessary, it may be helpful
to have a second person to assist in holding
the upper components while the other person
completes the service on the heater assembly.
1. Remove the front glass by pulling it up and out.
Ensure that it is kept in a safe place during the
service.
2. Remove the hole plugs that conceal the holes on
the front of the heater exhaust bracket.
3. Remove the heat exhaust bracket at the top of
the pro-box by unscrewing the screws in the front
which are accessed through the holes, as well
as the screws in the back (CDFI-BX1000 has 8
screws in total, and the CDFI-BX1500 has 12
screws in total). (Figure 3)
4. Remove the heater cover plate by unscrewing the
12 screws around its periphery. Be sure to hold
the heater assembly as it comes down.
5. Remove the 4 screws that secure the retaining
brackets to the heater cover plate. (Figure 4)
6. Remove the 2 screws on each retaining bracket
(4 total) that secure each bracket to the heater
assembly. Set the brackets aside. (Figure 5)
7. Snip the two cable ties that secure the wires to the
heater assembly.
8. Disconnect the wires from the heater assembly,
noting their original locations. It can be helpful to
take a picture of the heater assembly connections
before the wires are disconnected in order to keep
track of each wire’s place.
9. Secure each of the two retaining brackets to the
new heater assembly.
10. Reconnect the wires to the new heater assembly.
Use the provided cable ties to secure the wires
to the heater assembly, ensuring that they do not
interfere with the fan or the element.
11. Secure the retaining brackets to the heater cover.
12. Reassemble the unit in the reverse order as
above.
Retaining Brackets
Heater Assembly
Heater
Cover Plate
Figure 3
Figure 4
Heater Exhaust Bracket
Figure 5
Retaining Bracket
Screws

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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
dedicated 15 amp circuit
PROBLEM CAUSE SOLUTION
Heater
Heat is not turning on
Improper operation Refer to Operation section in CDFI cassette owner’s
manual.
Defective heater assembly Replace heater assembly
Defective relay board Replace relay board
Cassette connector extension was con-
nected with polarity reversed (wrong
way) — Problems with powering on the
cassette may also be experienced
Replace relay board.
Replace cassette main control boards.
Remove extension wire, and connect wire directly
from cassette to Pro-Box.
Heat is not turning o󰀨 Defective relay board Replace relay board
Heater shuts o󰀨 on its own; cutout
is engaged
An accumulation of dust or debris is pre-
venting the fan from functioning properly
Carefully clean heater assembly and air intakes and
exhaust using compressed air.
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.
For troubleshooting related to the remote, ame, sound, or plumbing, refer to the CDFI Cassette Service Manual.
1-888-346-7539 | www.dimplex.com
In keeping with our policy of continuous product improvement,
we reserve the right to make changes without notice.
© 2019 Glen Dimplex Americas