Enviro EF3 用户手册

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If the stove goes out and there are no pellets in the liner, the auger is stopping.
General:
●  See “The auger motor will not function normally” and “The exhaust blower will not function 

normally.”

12. Light # 2 on Heat output bar flashing (Circuit Board Only).
  (The Vacuum Switch contacts have opened for more than 15 sec.)
□  Pinch, break or blockage in Vacuum Hose - Check hose for pinch points or damage, replace or re-route 

as required.  Blow out Vacuum Hose

□  Blocked Hose Barb on Exhaust Channel - Use a paper clip to clean out Hose Barb or remove the 

Vacuum Hose from the Vacuum Switch and blow into the hose to remove blockage.

□  Blocked exhaust / venting system - Have stove and venting cleaned and inspected.
□  Severe negative pressure in area where unit is installed - Check the operation by opening a window, 

does this solve the problem? If it does, install fresh air intake to unit or room. Venting system may 

require vertical section to move termination into a low pressure zone.

□  Vacuum  Switch  failure  -  Bypass  the  vacuum  switch,  if  this  corrects  the  problem  check  for  above 

problems before replacing the Vacuum Switch.

□  Damage to gray wires between Circuit Board and Vacuum Switch - Inspect wires and connectors 
□  Combustion Blower failure - The Combustion Blower is not turning fast enough to generate the proper 

vacuum in the  Exhaust Channel.  Visual Check; is the  blower motor  turning?  Check the  Exhaust 

Blower voltage across the blower wires (>=114V on #5 setting and >= 82V on #1 setting). – Replace 

the Circuit Board if the Voltage reading is less than 82 V. with a line voltage >115V AC. 

□  Check  Vacuum  levels  in  the  exhaust  channel  by  bypassing  the  vacuum  switch,  then  remove  the 

Vacuum hose from Vacuum Switch.  Check exhaust vacuum readings by placing the open end of the 

Vacuum Hose on a Magnehelic Gauge. (readings must be above .10” W.C. on low fire).  

   

If the motor fails to reach a 0.10” W.C. readings, then replace the Combustion Blower 

F1 is the fuse to the inside of the circuit board controls. If F1 has blown there may have been an input 

power overload or a short in the convection fan. 
F2 fuse closest fuse to the outside edge of the circuit board controls. If fuse F2 has blown then there 

was a electrical overload problem with one of the following parts: ignitor, auger motor, high limit switch, 

or exhaust blower.

Troubleshooting