My Honeywell fan protector relay R8405B1017 on my gas furnace with A/C needs to be replaced due to an intermittent terminal. (There was some arcing and it actually melted the spade connector). I cannot find an equivalent relay part#... Google and cross referencing at Honeywell site has no results. What is the new equivalent to this 24 yr old part? Thanks.

hvac1000

The 05 in the relay number means it was made for use in a specific brand of furnace.
Pease provide the brand and model number of your unit.

All of these parts are available or a Honeywell replacement part will work. The replacement part might not look exactly the same but will function. Post the model and brand so I can look up. NOTE do not remove any wires yet and when you do mark all of them carefully.

BBRD

hvac1000 - Thanks for the very quick response!
The furnace model# is P9UGD11N12001A, make is York, Borg-Warner. Ser# CNNM405746.
-BBRD

hvac1000

Sorry no luck on that model. Take the part to the supply house and have them match it up.

BBRD

Thanks for trying hvac1000.

FISCO

Does the R8405B1017 control that is on your furnace have a small transformer on the top and a pull out style relay on the bottom??

BBRD

Actually, I made a mistake when quoting the relay part number. Sorry about that.

When inspecting the furnace I wrote everything down and then chose the wrong part# when posting. The actual relay in question is part# R4222B1082 described by Honeywell as a General Purpose Relay with SPDT switching.
See pg 87 of: http://customer.honeywell.com/download/70-6910.pdf

I've been able to locate a replacement on ebay of all places!

The R8405 B1017 part# I originally quoted was that of the blue Honeywell control box with transformer, R, RC, Y... screw terminals wired to the t-stat, etc.

Thanks for your help.

-BBRD

hvac1000

fan protector relay is a bit different that the GP relay. LOL

Glad you got the part and those relays are available at all the supply houses.