ELECTRICAL TROUBLE SHOOTING
WARNING: Only a trained technician should attempt to repair a pellet heater electrical system .
Note: All tests should be accomplished with the unit thermostat
Rem ove both AC and DC power from unit. The igniter system is protected with a 5 amp fuse located on the back or side of the heater (Figure 1). The igniter is switched “Off” and “On” by the control system via a relay located in the lower right pedestal in front of the control board (EF3801/5001) or in lower left rear of the unit accessed from the back (EF4001). W iring on all igniter system s are the sam e. The following test steps will require a m
a.Unplug heater from wall outlet and 12VDC power!
b. Rem ove 5 am p fuse holder cap and fuse by pressing in and turning counter clockwise. Test fuse with ohm m eter to confirm is not “open”. If fuse is open go to Testing Igniter “d”. If fuse is good continue.
c.Check 115VAC power wire connection to relay and neutral wire connection to igniter term inal. This can be accom plished with the ohm meter. If wire is disconnected or open replace.
d. Disconnect igniter leads from relay and neutral. Test continuity with ohm meter between leads. If open igniter is defective. If continuity exists then check for internal grounding by checking each lead to the shielded conduit of the igniter leads. If continuity exists to ground then igniter is defective. If meter reads open on both leads to ground then igniter should produce heat when properly connected to 115VAC.
e.W ith igniter disconnected from relay, attach volt
m eter (set meter to 200VAC) leads to relay 115VAC out term inal and igniter neutral. Reapply 115VAC power. Press operating button low. Relay should
im m ediately engage applying 115VAC to meter. If m eter has 115VAC then replace igniter as it should be activated. If no AC power outputted from relay. Continue to next test.
f.Disconnect DC control wires from harness to relay. Attach volt meter (set meter to 20VDC) leads to harness term inals. Reapply 115VAC power. Press operating button low. Control system should
im m ediately engage applying 12VDC to meter. If
m eter has 12VDC then replace relay as it should be activated. If relay does not engage, exchange control board and/or main switch board.
REPLACEMENT PARTS:
ITEM | PART | DESCRIPTION |
NO. | NO. |
|
1 | 120120 | 12VDC RELAY |
2 | 120117 | CARTRIDGE HEATER |
3 | 120118 | AUTOLITE CONTROL SW ITCH |
4a | 202163 | BURN POT SCREEN 5001 |
4b | 202164 | BURN POT SCREEN 3801/4001 |
5a | 300501 | BURN POT |
5b | 300500 | BURN POT |
6 | 110510 | 5 AMP FUSE MDL5 (NOT SHOW N) |
Customer Service & Replacement Parts
Replacement parts are available from your local dealer or
Customer Service Sierra Products, Inc. 5061 Brooks St. Ste. B, Montclair, CA 91763 Phone
Sierra Products, Inc. 5061 Brooks St. Ste. B, Montclair, CA 91763
22 | P/N 140804 10/07 |
