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Sunheat F-15 Gen IV, Repair Manual, Page: 22 / 36

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Sunheat F-15 Gen IV Repair Manual Download Page 22

J 

Flip the exchanger box over so that the black mounting plate is facing up. Remove 
the 4 bolts from the defective fan. 

 

After Removing the 4 bolts, flip the exchanger box over so the black mounting 
plate is lying on the bottom.  Remove the 4 nuts that are holding the fan in place. 

 

 

Mounting Plate 

Summary of Contents for F-15 Gen IV

Page 1: ...From The Wood Mantle B Remove Center Top Cap C Remove Front Glass D Remove Fire Log Set Firelight Screen E Replace Heat Tubes F Replace High Limit Switch 120c G Replace Flame Effect On Off Switch H R...

Page 2: ...isplay Screen O Replace Air Temperature Sensor P Replace Flame Effect Light Bulb Socket Q Replace AC Case Fan R Replace Fire Light Drive Rod Motor S Replace Power Cord T Replace Center Mounting Anchor...

Page 3: ...tions Below After the removal of the wing bolts slide the fireplace center out the front of the mantle Note Be careful to protect the lower lip of the mantle with a piece of cardboard or sheet of heav...

Page 4: ...ill to gain access to the switch fuse reset panel This panel is located on the left side Remove the 4 screws that hold this panel in place After the removal of the 4 screws that hold this panel in pla...

Page 5: ...B Remove the 11 perimeter screws that hold the center top cap in place Perimeter Screws Perimeter Screws Perimeter Screws...

Page 6: ...m the front NOTE Be careful not to lift the top cap too far or damage may occur to the wires that connect the display screen to the circuit board Disconnect the wire harness that runs from the display...

Page 7: ...hat hold the center unit into the wood cabinet and push the center forward slightly You will remove 2 screws on each side of the grill hinge in order to remove the grill Remove the 2 screws that hold...

Page 8: ...C Remove the 2 metal U clips that hold the glass into its channel The U clips are located to the left and right under the metal glass cap Slide the glass up and out from the guide channel U Clip...

Page 9: ...Fire Light Screen Remove the 4 screws that hold the fire log set in place There are 2 screws at each end of the fire log set These screws are accessed through holes in the metal case See Screw Locatio...

Page 10: ...fire log set up at one end The log set may be wedged into the case As you remove you may have go wiggle it slightly to free it NOTE The log set is made out of fiberglass Applying excessive force may c...

Page 11: ...e fire light screen into the fireplace See Screw Locations Below Removing the fire light screen will give access to the fire light drive rod drive rod motor and the AC case fan Screws AC Case Fan Driv...

Page 12: ...the 3 heat tubes has failed use a 7mm wrench to loosen the nuts on each end of the heat tube that holds the power wires in place ALLOW ELEMENTS TO COOL BEFORE REMOVING Remove the 2 screws that hold th...

Page 13: ...E After removing the heat tube access plate slide the malfunctioning heat tube out of the heat exchanger...

Page 14: ...120c To gain full access to the high limit switch the heat exchanger assembly needs to be removed Remove the 4 anchor screws that hold the heat exchanger assembly in place See Screw Locations Below A...

Page 15: ...Remove the 2 bolts from the fan closest to the high limit switch After removing the 2 bolts flip the exchanger box over so the black mounting plate is lying on the bottom Remove the 2 nuts that are h...

Page 16: ...a screwdriver on the other side to remove the screw After removing the screw nut remove the 2 screws that hold the Mica insulator plate in place See Screws Locations Below Once the plate is removed yo...

Page 17: ...at hold the switch fuse rest panel in place NOTE Mark all of the wires so you know the order to reattach to the new switch After removing the wires that connect to the switch use pliers to compress th...

Page 18: ...r compressing the locking tabs on the switch remove the switch through the front of the plate See Below NOTE Be sure to hook the wires back in the correct order Failing to do so will result in Switch...

Page 19: ...H Replace Flame Effect Fuse 1 amp Place a small flat screwdriver under lifting tab Carefully lift up fuse holder to gain access to the 1 amp fuse...

Page 20: ...er Reset Breaker 16 amps Remove the 4 screws that hold the switch fuse reset panel in place Hold the master reset breaker from the back as you loosen the threaded securing nut from the front See Below...

Page 21: ...gain access to the circulation fans the heat exchanger must be removed from the fireplace Remove the 4 anchor screws that hold the heat exchanger assembly in place See Screw Locations Below Anchor Sc...

Page 22: ...ck mounting plate is facing up Remove the 4 bolts from the defective fan After Removing the 4 bolts flip the exchanger box over so the black mounting plate is lying on the bottom Remove the 4 nuts tha...

Page 23: ...er switch NOTE Mark the wires so you know the order to reattach to the correct location After removing the wires from the tip over switch turn the fireplace around so that you are facing the rear Remo...

Page 24: ...e Heat Exchanger Box to the rear of the main circuit board Remove the Fan Power plugs and the main Power Supply to the board See Locations Below Using a 7 32 nutdriver remove the 4 nuts that hold the...

Page 25: ...on all four corners of the board NOTE Keep wires attached to old board Put the new board in place Disconnect 1 wire at a time from old board and connect it to the appropriate location on the new boar...

Page 26: ...4 screws holding the access panel in place and unplug Display Screen from the Circuit Board Remove the 4 screws that hold the function display screen into place on the front cover Remove the display s...

Page 27: ...side of the fireplace Unplug from the circuit board and pull the wire through the guide channel Replace with new temperature sensor and make sure it is plugged in to circuit board Leave temperature se...

Page 28: ...he lower access panel Hold the base of the light socket with one hand while unscrewing the anchor ring Remove the light socket from its metal bracket and trace the wire back to its connection location...

Page 29: ...ng the nut in place loosen the screw that runs through the metal case fan from the rear of the fireplace with a screwdriver NOTE You may need assistance to either hold the 7mm wrench or turn the screw...

Page 30: ...o the drive rod motor Remove the drive rod collar cotter key with a pair of needle nose pliers Separate the collar from the motor drive shaft At the base of the metal stand that elevates the Drive Rod...

Page 31: ...he wires together NOTE Take Care Not To Clip The Wires After manipulation of the drive rod motor bracket can be achieved use a 3mm Allen wrench along with a 7mm wrench to remove the screws nuts that h...

Page 32: ...o the ACL screw terminal on the circuit board Both wires are black and universal It will not matter which goes to which location To gain access to the lock nut that holds the ground wire in place the...

Page 33: ...se Use a 3mm Allan wrench to loosen the screw the runs through the ground wire metal panel After disconnecting the power leads and removing the ground wire turn the fireplace around to gain access to...

Page 34: ...unting anchors follow steps A B C D Using two sets of pliers hold the mounting anchor from the inside of the fireplace metal case Loosen the mounting anchor from the back side of the fireplace case Se...

Page 35: ...U WIRING DIAGRAM...

Page 36: ...U WIRING DIAGRAM...

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