Sierra Products MODEL EF 5000, MODEL EFI 4000, MODEL EF 3801, MODEL EF 3800 Quick Testing, Start up

Models: MODEL EF 5000 MODEL EF 3800 MODEL EF 3801 MODEL EFI 4000

1 30
Download 30 pages 5.32 Kb
Page 16
Image 16

Basic tools required for troubleshooting - Multi Volt/Ohm Meter, standard and phillips screw drivers, standard jewelers screw driver (fan speed adjustm ents on main control board).

No power - Power is provided by both AC and DC supplies. There are two replaceable fuses located near the power connections. They are identified as Main (1 amp) and Ignitor (5 amp). If AC power is present to the main control system a LED will be lit on the OFF button. If DC power is present a GREEN LED will be lit on the control panel.

Quick Testing -

1)Check AC power with volt meter at wall socket - 115VAC.

2)Check DC power at battery - 12VDC.

3)Rem ove fuses and check continuity with OHM meter. Blown fuses can be cause by voltage spikes (lightning, power company). If fuse is found blown, replace only once and retest. If the fuse blows again further troubleshooting is required before further fuse replacem ent.

Start up:

No fuel - Fuel located in the hopper is feed by a auger from the hopper bottom up to the shoot which directs the pellets into the burn pot. The feed m otor is controlled by the main control system and on m odels EF3801B, 5001B, and 5001U-B a hopper safety switch (EF4001-B auger can not be accessed from the hopper door). The switch will disable the feed system if the hopper lid is open. The switch is located on the upper right hopper vertical panel and is accessed through a sm all panel. Fuels is only feed in Low to High operating modes and requires “prim ing” auger. If hopper is out of fuel, cycle from OFF to LOW several tim es to allow pellets to feed into burn pot.

Quick Testing -

1) Confirm hopper lid is sitting on the switch arm and the arm is closing. W ith hopper lid open, push the switch arm down and listen for click noting switch closure. W ith heater cold, and lid open, push switch arm down, push Low and the feed m otor should start to turn.

2)Confirm feed m otor is not jam m ed by emptying hopper and verifying a foreign object has not be caught. Rem ove top cover from feed tube from inside hopper if there is any question. If the feed m otor is mechanically jam m ed, the control system has a built in circuit breaker. The breaker will require a reset by cycling from OFF to LOW . Do not recycle m ore than three tim es so the circuit does not becom e dam aged by overheating.

3)Pellets Jam m ed in feed shoot (above burn pot). Rem ove all jam m ed pellets and clean shoot with scraper.

Ignitor does not heat up - The ignitor has a separate 120VAC circuit which includes a fuse, relay, and ignitor. This circuit is activated by the main control board via a 12VDC wire harness lead. W hen the main control call for start the 12VDC circuit is closed sending 12VDC to the relay. As the relay closes, the 120VAC circuit is com pleted and the ignitor begins to heat.

As noted in prior section, if 120VAC power is not available the heater will still start the fan and feed if 12VDC is connected allowing a manual start with starter and match light.

Quick Testing -

1)Inoperative ignitor m ost likely have a blown fuse. Rem ove the 5 am p ignitor fuse and test with OHM meter. Replace if blown. As noted before if fuse blows again then further testing is required.

2)Testing ignitor requires access to the relay located near the main board assem bly. Access is through the lower right pedestal for the 3801/5001, junction box on the 4001 insert, and lower right cabinet for the 5001U. Rem ove the power to the unit. Unplug the ignitor lead from the relay and the neutral circuit. Using the OHM meter check for continuity between the two leads. If the circuit is open the ignitor has failed. If the circuit is complete check one lead and then ground the other lead to the ignitor base. If circuit is com plete ignitor has failed. A grounded circuit will cause the fuse to blow.

3)If ignitor check out, rem ove the harness leads to the relay and using the volt meter set to 20VDC, confirm 12VDC when the power is reapplied a run button is pushed. If 12VDC is found then the relay has failed.

Heater starts then burns out - The start up is controlled by the control system and best results are from a cold start. If a warm heater is im m ediately restarted it may not be able to confirm the required tem perature increase as the heater tem perature is already warm and the tem perature is actually falling during the initial start up. Allow the heater to cool and shut down before restarting.

Trim settings - W ill not change the first portion of the start up however will effect the initial run mode. If the trim is fully counter clockwise (Lowest) the heater may run low on fuel, most likely if the operating conditions are warm . High or Max

16

Page 16
Image 16
Sierra Products MODEL EF 5000, MODEL EFI 4000, MODEL EF 3801, MODEL EF 3800 manual Quick Testing, Start up