Lennox Merit ® Series Ask More from Your Air. Lennox 78H5501 Transformer, 30VA, Primary 120VAC, Secondary 24VAC. Lennox Furnace Parts, Lennox Heating Parts.Order parts online. The tech doesnt seem to have 24v going to gas valve, so he didnt think it was the valve. We have manuals, guides and of course parts for common G20Q3E-75-2 problems. CONTROL TRANSFORMER (T1) GROUNDING SCREW 1 – Control Transformer (T1) All G20RE series units use a single line voltage (120VAC) to 24VAC transformer. Steve, yes PV MV gas valve emailed a photo of the Lennox unit I have and its control board and the gas valve. Click on Your Model Number Below to View … Merit ® Series is the introductory product line that raises the bar for heating and cooling equipment. Electrical replacement parts for Lennox HVAC units can be found here. ... G20, G23 models 18G89 Flame Sensor for G12 G16, G20… Lennox 78H55 Stepdown Transformer. Lennox G20 Series - Bad blower board - or is it more? Lennox furnaces are quality units; however, similar to other furnaces, after some time, they can encounter their share of issues due to normal wear and tear or a lack of regular care and … Use with most Lennox Furnace models 78RGF, 80MGF, 80UHF, G17, G20, G20R, G21, G24M, GSR21, LD24, LF24. Welcome to the Lennox standard of excellence. Replaces 78H5501, 65209700. ... #21 • Jul 16, 2009. If he replaced the transformer with an OEM he will need to know which color is hot because Lennox transformers of … Find all the parts you need for your Lennox Furnace G20Q3E-75-2 at RepairClinic.com. Lennox® Furnace Service Manuals The Adobe Acrobat Reader® Application is Needed to Read ".pdf" Files Click Here to Get a Free Copy of Acrobat Reader®. Lennox 41K56 SureLight Hot Surface Ignitor 80 Volt, LB-109261A, 768A-4, 41K5601 Parts such as ignition controls, transformers, Circuit Boards, and a variety of electrical components are located here. Technical Hot and Cold 38568 Webb Dr. Westland, Michigan 48185 (734) 326-3900 (888) 828-8317 The … Don’t … It is located inside the control box providing … 39 transformer 78h5501 "120v pri,24v sec,30va,l/fuse (w/quick c 1 1 1 1 1 1 39 transformer p-8-9490 "120v pri,24v sec,30va,l/fuse" 1 40 board-circuit lb-63622aa brd-ctl 1 40 board-circuit lb-90089a control …