Hearth Technologies 2750 Quick start guide

MODEL 2750
PARTS & SERVICE MANUAL
7400120000R01

2
Table of Contents
OPERATION.........................................................................................................3
WIRING DIAGRAM...............................................................................................6
REPLACEMENT PARTS......................................................................................6
TO REPLACE UPPER LIGHT BULBS..................................................................7
TO REPLACE LOWER LIGHT BULBS.................................................................8
TO REPLACE MAIN ON/OFF SWITCH................................................................9
TO REPLACE LIGHT DIMMER SWITCH...........................................................10
TO REPLACE FLAME SPEED CONTROL.........................................................11
TO REPLACE FLAME MOTOR/FLAME ROD....................................................12
TO REPLACE FLAME MOTOR/FLAME ROD....................................................13
TO REPLACE HEATER ON/OFF SWITCH........................................................14
TO REPLACE HEATER THERMOSTAT CONTROL..........................................15
TO REPLACE HEATER ASSEMBLY .................................................................16
TO REPLACE THE POWER CORD...................................................................17
TROUBLE SHOOTING GUIDE...........................................................................18

2750 ELECTRIC FIREPLACE
OPERATION
This section will explain the function of each convent control.
To access the controls, open the upper grill by pulling near the top, forward
and down.
A. MAIN ON/OFF SWITCH
The on/off switch supplies power to all fireplace functions (heater & flame).
B. FLAME SPEED CONTROL (not available on some models)
Turn the flame speed control knob to adjust the flame speed to the desired
level.
C. FLAME LIGHT DIMMER CONTROL
Turn the flame brightness control to increase or decrease the brightness
of the flame and embers.
D. HEATER ON/OFF SWITCH
The heater on/off switch supplies power to the heating unit when the main
on/off switch (A) is in the on position.
E. HEATER THERMOSTAT CONTROL
To adjust the temperature to your individual requirements, turn the
thermostat control clockwise all the way to turn in the heater. When the
room reaches the desired temperature, turn the thermostat knob counter
clockwise until you hear a click. Leave in this position to maintain the
room temperature at its setting. For additional heat, turn clockwise until
you hear the click again and the heater will turn on. To turn the heater off,
rotate the knob fully counter clockwise.
RESETTING THE TEMPERATURE CUTOFF
This unit is equipped with a thermostat which controls the temperature of
the room. It does this by turning the heater on and off. The heater is
protected with a safety device to prevent overheating. 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 switching the ON/OFF
SWITCH to OFF and waiting 5 minutes before switching the unit back on.
CAUTION
3
If you need to continuously reset the heater, unplug the unit and call your
local dealer.

2750 ELECTRIC FIREPLACE
OPTIONAL REMOTE CONTROL USAGE
1. Plug the firebox into the outlet located on the
side of the receiver.
4
2. Plug the receiver into the wall outlet.
3. Install a 9 volt battery into the transmitter.
4. Turn the firebox main power switch to the
on position prior to using the remote control.
5. The remote control works up to 50 feet away.
6. Push the ON button to turn firebox on, push
the OFF button to turn the firebox off.
NOTE:
To prevent the risk of fire, the firebox plug must
be inserted fully into the receiver.
NOTE:
The remote control and receiver use one of 243
independent frequencies. When replacing the
remote control or the receiver they must be
replaced as a set to ensure proper operation.
The frequency of the remote is located on the
back of the remote on a label. (Figure 1)
Figure 1

2750 ELECTRIC FIREPLACE
5

WIRING DIAGRAM
REPLACEMENT PARTS
CATALOGUE NO. 2750
PART NO. 6900240659
MOD. LEVEL
REPLACEMENT PART REPLACEMENT PART NO.
1. GLASS 6900100400RP
2. GRILL 6900080159RP
3. LOG SET 0437960100RP
4. MIRROR 5900060300RP
5. POWER ON/OFF SWITCH 2800070200RP
6. LIGHT DIMMER KNOB 8800000800RP
7. FLAME SPEED KNOB 8800000200RP
8. HEATER ON/OFF SWITCH 2800070200RP
9. THERMOSTAT KNOB 8800000300RP
10.THERMOSTAT 2300150100RP*
11.FLAME PROJECTION PANEL 0437970100RP
12.LIGHT BLOCK NOT AVAILABLE
13.LOWER LIGHT HARNESS 2500090100RP
14.UPPER LIGHT HARNESS 2500080100RP
15.D.C. MOTOR 2000150100RP
16.SUPPORT FOOT 8800090100RP
17.REFLECTOR ROTISSERIE 6900190400RP
18.HEATER ASSEMBLY 2200290400RP
19.LIGHT DIMMER NOT AVAILABLE USE Leviton6602‐I
FROMHARDWARE
STORE
20.FLAME SPEED CONTROL 3000180300RP
6

7
2750 ELECTRIC FIREPLACE
If unit was operating prior to servicing allow at least 10 minutes for light bulbs and
heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
Light bulbs need to be replaced when you notice a dark section of the flame or
when the clarity and detail of the log exterior disappears. There are two bulbs at
the top of the opening that illuminates the log set exterior and four bulbs under
the log set which generate the flames and embers.
It is a good idea to replace all of the light bulbs at one time if they are close to the
end of their rated life. Group replacement will reduce the number of times you
need to open the unit to replace the light bulbs.
TO REPLACE UPPER LIGHT BULBS
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the mounting screw in the center of the glass and remove the
retainer bracket.
3. Remove the glass by lifting up from the bottom.
CAUTION: Even though the glass is safety glass it may break if bumped,
struck of dropped. Care must be taken when handling the glass.
4. Locate upper bulbs inside the center of the firebox at the top.
5. Replace bulb(s) that require replacement, holding onto the light socket
when while unscrewing.
6. Reassemble in the reverse order as above.
UPPER BULB-Quantity 2 chandelier or candelabra bulbs with an E-12
(small) socket base, 15 watt rating.
CAUTION DO NOT EXCEED 15 WATTS PER BULB

8
2750 ELECTRIC FIREPLACE
If unit was operating prior to servicing allow at least 10 minutes for light bulbs and
heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
Light bulbs need to be replaced when you notice a dark section of the flame or
when the clarity and detail of the log exterior disappears. There are two bulbs at
the top of the opening that illuminates the log set exterior and four bulbs under
the log set which generate the flames and embers.
It is a good idea to replace all of the light bulbs at one time if they are close to the
end of their rated life. Group replacement will reduce the number of times you
need to open the unit to replace the light bulbs.
TO REPLACE LOWER LIGHT BULBS
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the mounting screw in the center of the glass and remove the
retainer bracket.
3. Remove the glass by lifting up from the bottom.
CAUTION: Even though the glass is safety glass it may break if bumped,
struck of dropped. Care must be taken when handling the glass.
4. Only handle the log set by the ember bed and not by the logs. To remove
the log set lift up the front edge of log set until it clears the front tabs. Pull
out until the rear tab clears the back ledge, and then lift out.
5. Replace bulb(s) that require replacement, holding onto the light socket
when while unscrewing.
6. Replace the log by pushing it down and in until it rests against the mirror.
7. Reassemble in the reverse order as above.
LOWER BULB-Quantity 4 chandelier or candelabra bulbs with an E-12
(small) socket base, 60 watt rating.
GE 60BC or Philips 60CTC
CAUTION DO NOT EXCEED 60 WATTS PER BULB

9
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE MAIN ON/OFF SWITCH
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the main on/off switch mounted on the top panel and disconnect
the wiring clips and connections noting their original locations.
6. Depress the retainer clips on the rear of the switch and push the switch
out of the rear cover.
7. Properly orientate the new switch and connect all of the wiring clips and
connections.
8. Reassemble in the reverse order as above.

10
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE LIGHT DIMMER SWITCH
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the light dimmer switch mounted on the top panel and disconnect
the wiring clips and connections noting their original locations.
6. Pull off the thermostat control knob.
7. Remove the dimmer switch mounting screws and remove the switch.
8. Properly orientate the new dimmer switch and connect all of the wiring
connections.
9. Reassemble in the reverse order as above.

11
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE FLAME SPEED CONTROL
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the flame speed control mounted on the top panel and disconnect
the wiring clips and connections noting their original locations.
6. Pull off the thermostat control knob to expose the mounting nut.
7. From under the panel, break off the four mounting studs on the flame
speed control by grasping with pliers and twisting on the protruding part of
the stud, push the remainder of the studs out through the top panel. New
mounting studs are supplied with the replacement speed control.
8. Properly orientate the new flame speed control and connect all of the
wiring connections.
9. Reassemble in the reverse order as above.

12
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE FLAME MOTOR/FLAME ROD
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Gently place firebox front side up on a flat surface.
4. Remove the bottom cover mounting screws and remove the bottom panel
lifting the bottom up slightly to release the glass.
5. Locate the flame motor and flame rod assembly and remove the wiring
clips and connections noting their original locations.
6. Remove the flame assembly mounting bracket screws and rotate the
assembly forwards releasing the mounting tabs from the rear cover.
NOTE: When removing the flame motor some damage may occur to the
flame rod. If flame rod is damaged replace to insure proper operation.
7. To remove the flame rod attach needle nose pliers to the spring on the
motor shaft and pull while rotating in the opposite direction of the spring
winding.
8. To remove the flame motor you must first remove the flame rod (see
above). Remove the motor mounting screws and remove motor from the
mounting bracket.
9. To replace the flame rod attach needle nose pliers to the flame rod spring
and push onto the flame motor shaft while rotating in the opposite
direction of the spring winding.
10.Properly orientate the flame motor and connect all of the wiring clips
connections in their original locations.

13
2750 ELECTRIC FIREPLACE
TO REPLACE FLAME MOTOR/FLAME ROD
NOTE: Removal of the glass eases the installation of the bottom cover.
11.Remove the mounting screw in the center of the glass and remove the
retainer bracket.
12.Remove the glass by lifting up from the bottom.
13.Reassemble in the reverse order as above.

14
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE HEATER ON/OFF SWITCH
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the heater on/off switch mounted on the top panel and disconnect
the wiring clips and connections noting their original locations.
6. Depress the retainer clips on the rear of the switch and push the switch
out of the rear cover.
7. Properly orientate the new switch and connect all of the wiring clips and
connections.
8. Reassemble in the reverse order as above.

15
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE HEATER THERMOSTAT CONTROL
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the heater thermostat control mounted on the top panel and
disconnect the wiring clips and connections noting their original locations.
6. Pull off the thermostat control knob to expose the mounting screws.
7. Remove the mounting screws and remove the heater thermostat control
switch.
8. Properly orientate the new heater thermostat control and connect all of the
wiring connections.
9. Reassemble in the reverse order as above.

16
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE HEATER ASSEMBLY
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate the heater assembly mounted on the top panel and disconnect the
wiring clips and connections noting their original locations.
NOTE: A small slot screwdriver is required to remove some of the heater
connections.
6. Turn the top over, remove the heater mounting screws and remove the
heater assembly by sliding it back to release mounting tabs.
7. Properly orientate the new heater assembly and connect all of the wiring
connections.
8. Reassemble in the reverse order as above.

17
2750 ELECTRIC FIREPLACE
If the fireplace was operating prior to servicing allow at least 10 minutes for light
bulbs and heating element to cool off to avoid accidental burning of skin.
Disconnect power before attempting any maintenance or cleaning to reduce the
risk of electric shock or damage to persons.
TO REPLACE THE POWER CORD
1. Remove the firebox trim by placing your hand on the grill section, grasping
the trim and pulling outwards releasing the retainer clips.
2. Remove the firebox from the mantel.
3. Lower the grill covering the controls.
4. Remove the retaining screws on the top cover and remove the top, placing
it upside down on the top of the unit being careful not to damage any of
the wiring.
5. Locate and disconnect the power cord wiring connections noting their
original locations.
6. With needle nose pliers grasp the power cord strain relief grommet from
inside the rear panel and push while twisting to remove.
7. Pull the power cord out through the hole in the rear cover.
8. Install the new power cord through the hole in the rear cover and connect
all of the wiring connections in their original locations.
9. Install the power cord strain relief grommet on the power cord and insert
into the hole in the rear cover.
10.Reassemble in the reverse order as above.

2750 ELECTRIC FIREPLACE
TROUBLE SHOOTING GUIDE
APPEARANCE
Problem Flame frozen.
Probable Cause Loose wiring or defective flame motor.
Solution Check all wiring for loose connections, repair/replace
as necessary. If wiring connections are suitable,
replace flame motor.
Service Manual Reference Page 12
Problem Flame not bright, flame not visible.
Probable Cause Loose wiring or burnt out light bulb(s).
Solution Check all wiring for loose connections, repair/replace
as necessary. Check upper and lower light bulb(s).
Replace burnt out bulbs with factory specified bulbs.
Service Manual Reference Upper light bulb Page 7
Lower light bulb Page 8
Problem Flame shutter.
Probable Cause Defective flame motor.
Solution Replace flame motor with a new one.
Service Manual Reference Page 12
Problem Log set dim, ember bed not glowing.
Probable Cause Loose wiring or burnt out light bulb(s).
Solution Check all wiring for loose connections, repair/replace
as necessary. Check upper and lower light bulb(s).
Replace burnt out ones with factory specified bulbs.
Service Manual Reference Upper light bulb Page 7
Lower light bulb Page 8
18

2750 ELECTRIC FIREPLACE
TROUBLE SHOOTING GUIDE
APPEARANCE
Problem Fireplace does not turn on.
Probable Cause Defective main power on/off switch or loose wiring.
Solution Check all wiring for loose wiring connections,
repair/replace as necessary. If all wiring connections
are suitable check the main on/off switch for proper
operation. Replace switch as necessary.
Service Manual Reference Page 9
19

2750 ELECTRIC FIREPLACE
TROUBLE SHOOTING GUIDE
HEATER ASSEMBLY
Problem Heating element is glowing red.
Probable Cause Normal operation or defective heating assembly.
Solution Small glowing sections of the element are considered
normal. If larger glowing sections are causing the
heater to trip the thermal cut out, unplug, discontinue
use and replace the heater assembly.
Service Manual Reference Page 16
Problem Heater is not turning on.
Probable Cause Defective switch or loose wiring or defective heater
assembly.
Solution Check all wiring for loose wiring connections,
repair/replace as necessary. If all wiring connections
are suitable check heater on/off switch & heater
assembly for proper operation. Replace as
necessary.
Service Manual Reference Heater on/off switch Page 14
Heater assembly Page 16
Problem Heater fan turns on but heater lacks heat.
Probable Cause Improper operation or defective thermostat or loose
wiring.
Solution See page 3 of the service manual for heater
thermostat operation. Check all wiring for loose wiring
connections, repair/replace as necessary. If all wiring
connections are suitable check heater thermostat for
proper operation. Replace as necessary.
Service Manual Reference Operation Page 3
Thermostat replacement Page 15
20