Sierra Products MODEL EFI 4000, MODEL EF 5000 Run mode Troubleshooting, Shutdown, Quick Testing

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

1 30
Download 30 pages 5.32 Kb
Page 17
Image 17

trim settings may cause the opposite problem as the heater feeds to much fuel and allows the HIGH TEMP control stop the feed to cool the stove. Best starting trim setting is the mid point or 9:00 o-clock.

High tem p starts will also occur if the burn pot has additional fuel prior to start up. This additional fuel which is then added too as the start cycle begins pushes the tem peratures up as the heater starts. This is considered an tem perature overshoot as the tem perature climbs quickly.

Heater will not start when run button is pushed - Check external therm ostat jum per or rem ote therm ostat as the unit will not attem pt a start unless this circuit is closed.

Run mode Troubleshooting:

Once the heater reaches the run mode it will continue operation by using the coals in the burn pot to light the pellets continuing to fall. If the coal bed burns down at some point the pellets may not light and then the heater will shut down. This is norm ally confirm ed by finding the burn pot with unburned fuel and shut off. This can also happen if the hopper runs low on fuel or the fuel bridges (hangs on the hopper sides).

Run mode problem generally are either operational or lim its exceeded - Blocked Flue (loss of flue draft) or High

Tem perature is exceeded. Blocked flue indication is a solid RED LED on the control panel and requires a recycle of the heater to clear. This is for the operators protection as a blocked flue could cause a dangerous condition. Block flue most likely is not fully blocked and will occur if the flue pipe is subject to high wind conditions or is blocked by ash. If this happens during initial installation a corrective action to the flue system will be required. Check the installation manual for flue recomm endations.

Operational problem s are generally related to ash build up in the burn pot or the heat exchange system and can be correct by cleaning.

Over Feeding - Over feeding is a comm on problem and is related to a lack of combustion air rather than to much fuel. If the heater is clean and seems to feed m ore fuel adjust the trim down to slow the feed rate. If the heater has been operated for sometim e since the last cleaning then shutting it down and cleaning will solve the over feed. Check the door for proper adjustm ent as a partially closed door will cause reduced combustion air. Operating the heater for an extended tim e with an open door will cause a shut down with RED LED and require a restart.

Im m ediate RED LED when a run m ode is selected indicates a failed sensor (generally a T-1). Replacem ent of sensors are accomplished by rem oving the rear access panel and norm ally requires rem oving the flue pipe. Review repair manual for additional inform ation.

Shutdown:

Shut down is the sim plest mode as the feed is stopped and the fan continues to operate until the heater is cool. If the fan continues to run after it is fully cold then the T-2 sensor and the main control did not register the required tem perature reduction. Unplug the heater to reset and run again. If problem persists then the T-2 sensor or the control system will require com ponent replacem ent.

Battery Operation Troubleshooting -

Battery operation requires a fully charge 12VDC battery capable of sustained 2 amp/hr. loads while maintaining a minim um of 11.2 VDC. This voltage is required for proper system operation. Most battery operation problem s can be traced to a battery in pour condition.

Quick Testing

Rem ove battery from heater and charge overnight with autom otive type battery charger. Test battery with autom otive load tester. Replace if required. Testing connections from term inals on rear of heater back to the harness. If all connects are secure a m ain control board will be required.

Additional detailed inform ation is contained in the installation and repair m anuals. Please refer to these for in depth troubleshooting guides and harness replacem ent.

17

Page 17
Image 17
Sierra Products MODEL EFI 4000 manual Run mode Troubleshooting, Shutdown, Battery Operation Troubleshooting, Quick Testing