Welcome to Our Fan & Blower
Controls Page!
Hello Everyone! We Hope All of You Have A Happy, Healthful
& Prosperous 2009!
This page contains some of the Fan
& Blower controls that I use most often every winter and summer in our
16 year HVAC business. We wanted to make these parts available to you so you can
be prepared if your heater goes out on one of those cold winter nights or hot
summer days!
*We ship to the 50 United States & Canada.
Everything on this page is in stock and ready to ship.
You will receive a tracking number when we ship your order.
Shop
With Confidence!
We
are Square Trade & PayPal Verified Members!
We have VeriSign Secure
Online Credit Card Processing and Cool Cart
Secure Shopping Cart
Service!
We Have Processed Over 6,700 Successful PayPal Orders!
We Have Promptly Shipped Over
40,000 Orders Since 2002!
We
are Square Trade Members and PayPal Verified
We are members of
the Better Business Bureau with an A+ Rating.
Kentucky State Masters HVAC License # M01340
  
 
*Important: Please make sure that all
electricity is turned off before attempting to troubleshoot or repair Heating
& Air Conditioning Equipment.
White
Rodgers Fan Control Center Relay Model #90-113
First,
we have a furnace and
air
conditioning part that goes out more often in the summer months
than in
the winter.
The part
is
called
a
Fan Center Relay.
Problem: Fan will not come on in
the "ON" position or your fan will not come on when you turn the
thermostat down in the air conditioning mode.
Solution: Purchase a new fan
center relay or fan sequencer. A sequencer looks like the picture below. We have
sequencers for sale on the following page:
Please click here if you are interested
in sequencers. Please see the information below for fan center problems or
fan limit control problems.
Above picture of a
sequencer:
Purpose of the Fan Center Relay: The purpose of the fan
center relay is to provide low voltage control (24 Volts) of line voltage
circuits (110 volts) and can be used to control two-speed blower motors and
auxiliary circuits in heating or cooling equipment. Many of the newer furnaces
do not have fan center relays, but many of the older furnaces and some new
furnaces still do. You would need to look inside your furnace to determine if
you have a fan center relay. Some of the relays are attached to a junction box
where the power comes into the furnace, and others are located in the blower
compartment attached to the blower housing. You might not have the relay that we
sell below. Many of the newer furnaces are control by electronic circuit boards.
Troubleshooting
procedure:
1.
Make sure that your furnace switch is "ON" the furnace blower
compartment door is on and secure. Move the lever on the thermostat to the
"ON" position. The fan blower should come on. If it doesn't then you
probably have loose or burnt wires in behind the relay or you may need a new fan
relay or circuit board.
2.
Many times wires are either loose or burnt behind the fan center relay. First
make sure your furnace power is turned off. Remove the fan center relay and
inspect it for loose or burnt wires. Repair wires and reinstall fan center
relay. Turn the power to the furnace back "ON." Hopefully you have
fixed the problem!
3.
With the furnace on use a multimeter set to AC Volts, to test between terminals
"R" and "C." You should get a voltage reading of approximately 24 volts AC. If
you do not get any voltage reading, your low voltage transformer might need
replacing or you are not getting high voltage to power the transformer.
Sometimes furnace manufacturer's connect the furnaces transformer through the
limit control so if your furnace over heats or if the limit is stuck open then
you will not get power to the transformer. There are quiet a few variables that
can occur to cause furnace problems. I believe I have covered the main problems.
If you have the fan center relay like we sell below the low voltage transformer
is combined with the fan relay. Below we have pictures of the fan center relay
with an opportunity for you to purchase. This relay will work on motors up to
3/4 horse power.
 
Fan
Center Top View
Fan Center with
Instructions
Fan Center side view:
Fan
Center box with specifications:
International
Refrigeration Products SPDT
24 volt Coil Fan Relay
Part #90-370
"SPDT" stands for Single Pole Double Throw.
You might need one of these relays if your fan will not
shut off, runs all the time, or will not come on in the "Fan On" position.
I see this relay
in some of the older furnaces so I wanted to make it available for you to
purchase. These relays are used to cut the fan on and off when the thermostat is
set in the air conditioning mode or when you move the thermostat to the "Fan On"
position. The low voltage usually the green thermostat
wire is wired to terminal #1. The low voltage common wire to terminal #3. One
line voltage wire is attached to terminal #4. The high speed blower wire usually
black is attached to terminal #2. When the thermostat calls for air conditioning
or "Fan On" the 24 volt coil is energized, the terminals 4 and 2 close. This
causes the fan to come on in high speed. When your home cools down and the
thermostat cuts the air conditioner off, the low voltage coil terminals 1 & 3
are deenergized, and the fan goes off. Sometimes these little relays stick which
causes the fan to run all the time or will not make good contact, which causes
the fan to not run in the "Fan On" or air conditioning mode. Below we
have pictures with an opportunity for you to purchase.
This relay is rated 12 Full Load Amps with 125 Volts AC
We are getting the above Fan Relay from Beacon Components instead of
White-Rodgers.
The Beacon relay has the same specifications as the White-Rodgers.
International
Refrigeration Products 2PDT
Switching Relay
Part #90-340
I see this relay
on many furnaces and HVAC applications. "2PDT" means Two Pole Double Throw. When
the 24 volt coil is energized (through the bottom two terminals) terminals #1
and #3 close the circuit at the top and terminals #4 and #6 close at the bottom.
These terminals would be called "NO" (Normally Open) because these terminals are
normally open until the 24 volts are applied to the coil. When the coil is
not energized terminals #1 and #2 are closed and terminals #4 and #5 are closed.
These terminals would be called "NC" (Normally Closed) because these terminals
stay closed until the 24 volt coil is energized. I hope this explanation will
help you understand what the markings on the relay represent. The specifications
on this relay are: 24 volt coil, rated at 12 FLA (Full load amps) for 125 volts,
6 FLA (Full Load amps) at 277 volts. 60 LRA (Locked Rotor Amps) at 125 volts and
35 LRA at 277 volts.
American Standard,
Trane Air Handler Fan Time Delay Relay
Part #RLY02807
If your fan on
your American Standard or Trane air handler will not come on, or will not go off
then you might need the fan relay that we have listed below. The new
solid state relay pictured on the left replaces the old style relay pictured on
the right.
Above Pic of New Air Hander Relay: Above pic of
old style air handler relay:
Honeywell
L4064 Fan Limit Controls
Important: Please make sure that all
electricity is turned off before attempting to troubleshoot or repair Heating
& Air Conditioning Equipment.
What is a fan limit control? Fan
limit controls are very important for your safety and for proper furnace
operation. Fan limit controls that we sell are suitable for all types of forced
air heating systems. The fan limit control provides high limit control of the
burners and control of the fan motor according to the furnace plenum
temperature. When your furnace burners come on the fan limit control measures
the temperature inside the furnace's plenum. When the temperature of your
furnace gets warm enough and to the preset temperature on the fan limit control,
the control clicks on and causes the furnaces blower fan to kick on and
circulate air throughout your home. When your thermostat is satisfied the
burners kick off and the fan continues to run until your furnace's plenum cools
down to the fan OFF set point on your fan limit control. The fan limit control
turns the fan off. The fan limit control is an important safety device. Let's
say that your furnace's burners come on but the blower motor is bad and will not
start. Without the fan limit control your furnace could over heat and cause a
fire! The fan limit control shuts the gas burners down so the furnace will not
over heat and cause a fire. The Honeywell fan limit controls that we sell below
have a manual fan switch that can be used to override the fan set point and keep
the fan running continuously.
Problem:
Your fan on your furnace runs all the time and will not shut off.
Solution:
Check to make sure the fan is not in the fan "ON" position on your
thermostat. Check to make sure your air conditioning fan relay is not stuck in
the on position. The contacts on your air conditioning relay could be welded
closed, causing the fan to run all the time. You might try lightly tapping on
the Air conditioning relay to see if the fan will go off? You really need an AC
Volt meter to check this out. You probably need a new Fan Limit control. There
are many different types of controls. We will be adding more in the future.
Problems:
Your fan shuts off too soon, cycles off and comes back on within 30 seconds to a
minute, or runs too long and will not shut off until it is blowing cold air. You
could turn you electrical power off and adjust the little tabs on your fan limit
control.
Solution:
You can sometimes adjust the little tabs on your fan limit control to make in
run longer or shorter. The fan "OFF" setting on the fan control below
is set to go off at 90 degrees. On at about 110 degrees and the limit that shuts
the gas burners off is set at 190 degrees. You can lightly push in on these tabs
and adjust them to the desired temperature. I always lightly push and hold the
center round dial while adjusting the tabs so it will not bend or break the
limit control spring that is attached to the dial and runs in back of the limit
control. Please see the picture below. If your adjustments do not work, or if
your fan limit control becomes too inaccurate then you might consider purchasing
one of the Honeywell fan limit controls we sell below.
Above
Honeywell Fan Limit Control Out of Box:
Below
we have pictured three Honeywell fan limit controls with an opportunity for you
to purchase at a low wholesale price. These controls are sold based upon their
insertion length. We have the 5 inch, 8 inch and 11 inch insertion length fan
limit controls. All controls are in stock and can be shipped the day you order!
We have same day shipping on orders received before 3:00 PM. Eastern Standard
time. We hope you can find your fan limit control below!
We
would love to have your business!
*Please Note the L4064 B Controls
below do not have the "Timed On" heater. The Honeywell L4064 W fan limit
controls, located below the L4064B Fan Limit Controls have the "Timed On" heater
installed in them.
Honeywell Combination Fan & Limit Control with "Timed On" Feature
If you have a Fan Limit Control that has the heater in the
middle, "Timed On," like the picture below then we have the combination fan limit control for
you.
Sorry, No Returns on Electrical,
Electronic Products, Fan Controls, Once they Have Been Installed.
More
blower fan parts coming soon! Please
check back often. Thank You!
Did
you find what you need? Below, you may use Google to search our site or the
Web:
Thanks
For the Opportunity to Do Business With You!
Please
read, some reasons why you should feel at ease when ordering from Arnold's
Service Company, Inc.:
We
Would Love to Have Your Business!
1.
We Have Low Wholesale Prices on Heating
& Air Conditioning Service,
Supplies and Parts! Some of the lowest prices found on the Internet!
2.
We are dedicated to quick delivery of your parts and supplies with
quick UPS shipping right to your front door!
3.
We give immediate Email confirmation after you purchase and
follow-up
4.
We ship your order within 24 hours after you purchase.
5.
We Email you an UPS tracking number the day we ship
Privacy Statement:
Please click here to see our Privacy Policy
page if you are interested. Arnold's Service Company, Inc. is committed to protecting your privacy. Your
personal information and email address will not be sold, rented or given to
anyone. Your information will be used ONLY by
Arnold's Service Company, Inc. We promise you!
Please
Remember Safety First
Please
read our disclaimer and safety related information below before attempting to do any
type
of Heating
or Air Conditioning Repair. We do not want to see anyone get hurt or
shocked! Thank You!
*Please always turn off all electrical
power, and discharge the capacitor/capacitors (if working around capacitors) before attempting to inspect or repair any heating & air conditioning
equipment. Check to make sure the electrical power is off with a reliable meter. I have never
been shocked by a capacitor (knock on wood) and rarely see them discharge, but
it is a good idea to discharge them before working around them. Please read
below. It tells you how to discharge a capacitor.
 
Please read the following:
How To Discharge The High Voltage
Capacitor: The capacitor is discharged
by creating a short circuit (direct connection) between the two capacitor
terminals and from each terminal to chassis ground (bare metal surface).
Please make sure that you are touching the insulated screw driver handle and not
the metal part of the screw driver before attempting this procedure.
-
Do this by touching the blade of an insulated-handled screw driver to
one terminal, then slide it toward the other terminal until it makes contact
and hold it there for a few seconds. ( Sometimes
this can result in a rather
"pop!")
Repeat the procedure to create a short between each capacitor terminal and
chassis ground.
If the capacitor has three terminals, use the same procedure to create a
short circuit between each terminal and then from each terminal to ground.
Disclaimer:
Arnold's Service Company,
Inc. assumes no liability for any incidental, consequential or other liability
from the use of this information. All risks and damages, incidental or
otherwise, arising from the use or misuse of the information contained herein
are entirely the responsibility of the user. Although careful precaution
has been taken in the preparation of this website information, we assume no
responsibility for omissions or errors.
To
purchase using PayPal, Credit Card, Visa, MasterCard, Discover or American Express,
please click on the
"Add to Cart" button next to each item you would like to purchase. Thank
You!
PayPal
It's Fast, Easy, Safe & Secure!
We Have VeriSign Secure Online Credit
Card Processing!
We
accept these credit cards:
We
are Square Trade Members and PayPal Verified
Shop With Confidence!
Thanks for visiting Arnold's Service
Company's Website!
Please visit our
Favorite Christian Websites page.
On this page we have a list of our
Favorite Christian Websites. This page is intended to remind you of the eternal promises that are
found in God's Holy Word and of God's never ending love for you.
I try to read from some of these websites early each morning. It helps me get
the day started out on the right track. I hope you enjoy these websites as much as I have!
God Bless you all.
|
We
Sell Heating, Air Conditioning Parts & Supplies To You At Low Wholesale Prices!