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Service Manual
Models
North America
ULT50-AM
ULT60-AM
ULT74-AM
ULT88-AM
ULT100-AM
Europe
ULT40-EU
ULT50-EU
ULT60-EU
ULT74-EU
ULT88-EU
Australia
ULT40-AU
ULT50-AU
ULT60-AU
ULT74-AU
ULT88-AU
IMPORTANT SAFETY INFORMATION:
Read this manual first before attempting to install or use this electric fireplace. Always comply with the
warnings and safety instructions contained in this manual to prevent personal injury or property damage.
Conventions used in this manual:
!
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 fire, serious
injury, or death.
7401230100R00

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Summary of Contents for Glen Dimplex ULT50-AM

  • Page 1 Service Manual Models North America ULT50-AM ULT60-AM ULT74-AM ULT88-AM ULT100-AM Europe ULT40-EU ULT50-EU ULT60-EU ULT74-EU ULT88-EU Australia ULT40-AU ULT50-AU ULT60-AU ULT74-AU ULT88-AU IMPORTANT SAFETY INFORMATION: Read this manual first before attempting to install or use this electric fireplace. Always comply with the warnings and safety instructions contained in this manual to prevent personal injury or property damage.
  • Page 2: Table Of Contents

    Table of Contents Exploded Parts Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 LED Configurations .
  • Page 3: Exploded Parts Diagram

    Exploded Parts Diagram 13 14 overhead LEDs flame LEDs ember bed LEDs ! NOTE: ULT74, ULT88, ULT100 use TWO replacement media kits...
  • Page 4: Led Configurations

    LED Configurations ULT40 Overhead Ember bed (Back) Ember bed (Front) Flame ULT50 Overhead Ember bed (Back) Ember bed (Front) Flame Overhead ULT60 Ember bed (Back) Ember bed (Front) Flame Overhead ULT74 Ember bed (Back) Ember bed (Front) Flame Overhead ULT88 Ember bed (Back) Ember bed (Front) Flame...
  • Page 5: North America

    28 8-segment RGB LED X-3002350300RP 14 Side trim top - right 29 Complete log set 500003775 15 Side trim rear 500003733 30 Tumbled glass 500003395 ULT74, ULT88, ULT100 use TWO ULT50-AM ULT60-AM ULT74-AM ULT88-AM ULT100-AM 31 Flicker rod 500003649 500003650 500003651 500003652 500003653...
  • Page 6: Wiring Diagrams - North America

    Wiring Diagrams - North America ULT50-AM Overhead LED strips On-board controls Ember bed LED strips Ember bed LED strips Power board Main control Flame LED strips board Logs ULT60-AM Overhead LED strips On-board controls Ember bed LED strips Ember bed LED strips...
  • Page 7 ULT74-AM ULT88-AM...
  • Page 8 ULT100-AM www.dimplex.com...
  • Page 9: Europe

    13 Side trim top - left 28 8-segment RGB LED 14 Side trim top - right 29 Complete log set 15 Side trim rear 30 Tumbled glass ULT74, ULT88, ULT100 use TWO ULT50-AM ULT60-AM ULT74-AM ULT88-AM ULT100-AM 31 Flicker rod 500003649 500003650...
  • Page 10: Parts Serviced In Upper Housing

    Parts serviced in upper housing Preparing the firebox for service in upper housing Heater assembly, on-board controls, overhead LEDs, and speaker are located in the top of the fireplace. The front glass needs to be removed to access these components. Tools required: Suction cups (provided with fireplace) Philips head screwdriver...
  • Page 11: Heater Assembly Replacement

    Heater Assembly Replacement FRONT Figure 4 middle service plate Tools required: Suction cups (provided with fireplace) Philips head screwdriver 1. Turn off the power to the fireplace from the electrical panel and follow steps for removing front glass. 2. Remove the 4 screws on the middle service panel.
  • Page 12: On-Board Controls Replacement

    On-board controls replacement Tools required: Suction cup (provided with fireplace) Philips head screwdriver Figure 7 1. Turn off the power to the fireplace from the electrical panel and follow steps for removing the front glass. 2. Remove the 2 screws on each side of the on- board control assembly.
  • Page 13: Speaker Replacement

    Speaker replacement FRONT Tools required: Suction cup (provided with fireplace) Philips head screwdriver Figure 9 1. Turn off the power to the fireplace from the electrical panel and follow steps for removing front glass. 2. Remove the 8 screws on the left service panel. Slide the bracket back to release it.
  • Page 14 Overheard LED Replacement FRONT Tools required: Suction cup (provided with fireplace) Figure 11 Middle LED Philips head screwdriver Pliers FRONT 1. Turn off the power to the fireplace from the electrical panel and follow steps for removing front glass. 2. For middle overhead LED: Remove the 4 screws on the panel.
  • Page 15: Parts Serviced Under The Ember Bed

    Parts serviced under the ember bed Preparing the firebox for service under the media bed Ember bed LED strips, power switch, and log expansion board are located under the ember bed. Tools required: Suction cup (provided with fireplace) Philips head screwdriver Ensure power switch is Figure 15 off (O)
  • Page 16 Ember bed LED replacement Tools required: Suction cup (provided with fireplace) Philips head screwdriver 1. Turn off the power to the fireplace from the electrical panel and follow steps for Pinch rivets using pliers servicing components under the ember bed. to release LED board 2.
  • Page 17: Power Switch Replacement

    Power switch replacement Tools required: Suction cup (provided with fireplace) Philips head screwdriver Pliers Figure 20 Tools Required: Phillips-Head Screwdriver Pliers 1. Turn off the power to the fireplace from the electrical panel and follow steps for servicing components under the ember bed. 2.
  • Page 18: Expansion Board Replacement

    Expansion board replacement 1. Turn off the power to the fireplace from the electrical panel and follow steps for servicing components under the ember bed. 2. Disconnect the 4 pin connector 3. remove the two screws 4. secure the new log expansion board 5.
  • Page 19: Parts Serviced Behind The Mirrored Glass

    Parts serviced behind the mirrored glass Preparing for behind the mirrored glass Heater assembly, on-board controls, overhead LEDs, and speaker are located in the top of the fireplace. The front glass needs to be removed to access these components. Tools required: Figure 24 Suction cups (provided with fireplace) Philips head screwdriver...
  • Page 20: Temperature Sensor Replacement

    Temperature Sensor Replacement FRONT Tools required: Suction cup (provided with fireplace) Philips head screwdriver Side cutters 1. Turn off the power to the fireplace from the electrical panel and follow steps for service behind the mirrored glass. 2. Remove the eight (8) screws on the upper left service panel.
  • Page 21: Main Control Board Replacement

    Power Board Power supplies Main board control ULT88, ULT100 board have three Main control board replacement Power supply replacement Power board replacement Tools required: Board replacement Suction cup (provided with fireplace) Philips head screwdriver Side cutters Tools required: Suction cup (provided with fireplace) Philips head screwdriver 1.
  • Page 22: Flicker Rod Replacement

    Flicker rod replacement Tools required: Suction cup (provided with fireplace) Flame Philips head screwdriver panel 1. Turn off the power to the fireplace from the electrical panel and follow steps for service behind the mirrored glass. 2. Remove the flame panel. Note: On larger models there are multiple segments.
  • Page 23: Flame Led Replacement

    Flame LED replacement Tools required: Suction cup (provided with fireplace) Philips head screwdriver 1. Turn off the power to the fireplace from the electrical panel and follow steps for service behind the mirrored glass. 2. Remove the flame panel. Note: On larger models there are multiple segments.
  • Page 24: Flicker Motor Replacement

    Flicker motor replacement Tools required: Suction cup (provided with fireplace) Flame Philips head screwdriver panel 1. Turn off the power to the fireplace from the electrical panel and follow steps for service behind the mirrored glass. 2. Remove the flame panel. Note: On larger models there are multiple segments.
  • Page 25: Troubleshooting

    Troubleshooting Problem Cause Solution Defective temperature sensor Defective power board Defective power supply No log, ember bed, or overhead Defective power board Replace power board lights (flame works) General Circuit breaker trips or fuse blows Install unit on a dedicated minimum 15 Improper circuit current rating when unit is turned on amp circuit.
  • Page 26 Defective heater assembly Replace heater assembly Heater and fan don’t turn on - check if heat light stays on Defective main control board Replace main control board Flame, lights, and logs ***If one of any of these features are not working properly, verify that the other features are working properly in order to troubleshoot the cause of failure Defective flicker motor Replace flicker motor...
  • Page 27 No action required. below 5° C (41° F) Err 16 NTC not detected See 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. © 2023 Glen Dimplex Americas...

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