Main Circuit Board Replacement For Toyostove Laser 56 and 73 Models
Rural Energy Enterprises, Inc. does not accept liability for the improper use of this information. Installation, service, and maintenance of heating equipment should be performed by a qualified technician. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life.
Different models require different circuit boards.
Due to changes in the design of the heater, main circuit boards manufactured for the older Laser 56 and 73 models should not be used in newer models. The heaters will operate properly but because the speed of the circulation fan motor at Low operations is higher on the old circuit boards, use of this board in the newer heaters may result in low exhaust temperature and thus moisture, (possibly ice) and perhaps corrosion in the blower assembly.
The boards can be identified by the Toyotomi part number and/or by the identification number on the board itself (see diagram).
Laser 56E and Laser 73H :
Use part #20478312. ID number M-0015-01, Type 2474 FF-56
Or ID number M-0015-__, Type 2474 FF-56
Laser 56 F or G and Laser 73 I or J:
Use part #20478512. ID number M-0015-04, Type 2486 FF-56(N)
Or ID number M-0015-__, Type 2486 FF-56(N)