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  1. Home
  2. Air Cleaners
  3. Duct Mounted
  4. F300A2012 Parts

F300A2012 & F300B2012 Parts (Single Cell Model)

  12½ x 20 16 x 20 16 x 25 20 x 20 20 x 25
  • F300E1035
  • F300E1027
  • F300E1019
  • F300E1001
  • F300A2012

The following diagram displays parts specific for the model F300a2012 & F300B2012. Visiting each part landing page will provide detailed part information, pricing and availability.

Remote Indicator Post Filter Cell Contact Power Box Cover Air Flow Sensor Front Contact Power Box 120V Power Box 240V Interlock Switch Neon Lamp On-Off Switch Prefilter Ionizing Wire Cell Handle Collector Cell Test Botton Access Door Power Supply Rear Contact Cell Key High Volt Wire

Where is my F300 Model Number

F300E model is located on the inside of  acess doorOrder parts based on your model number. The f300 model number is located on the inside of the door.

Otherwise order parts based on the overall size of your cells. The F300 come in 5 sizes: The smallest model has one cell 12½x20.

The two cell models are 16" x 20", 16" x 25", 20" x 20", 20" x 25".

The difference between the F300E and F300A is the postfilter, which is not included with the F300A. The F300A has the postfilter which only needs to be slid in place. The F300B is a 240v version of the 12½x20 F300A.

The F300 is identical to the F50F, but with difference paint color.

Honeywell F300E Service Manuals & Brochures

  • F300 Owners Manual
  • F300 Product Data
  • White Dust Removal
  • F300 Feature List
  • Cell Washing Frequency
  • Competitor Comparison
  • Honeywell Reliability
  • Trane Comparison
  • Indoor Air Quality Guide
  • Aprilaire Comparison

Simple Power Supply Test Procedure

Troubleshoot Problem:

  • The neon indicator light is not coming on
  • The cells never spark
  • Power box switch is ON
  • Door is tight in place
  • Blower is ON
  1. Verify Power is Present.
    Unplug the power box cord and operate a drop-light in the 3-prong receptacle verifying an acceptable voltage and current.

  2. Check for Shorted Cells
    A shorted cell can prevent the indicator light from coming on. Remove both cells, with door back in place operate without cells. If the unit now appears OK with indicator light ON, then the cells have a problem.

    1. Operate without cells
    2. Check cells for broken wires
    3. Check cells for bent plates
    4. Check with one cell at a time (align cell with contacts)

  3. Replace or Repair Power Box.
    If the power box is plugged in to 120v and the Neon indicator still does not light without the cells, then the problem is in the power box.
  1. Check the on/off switch, interlock door switch and wiring.
  2. Bypass the Air Flow Switch (AFS), The AFS is a sensor that signals the power supply when air flow is present. Disabling the AFS will simulate the ON state. Using a jumper wire, ground AFS resistor to the chassis, see AFS Tech Notes.
    • Replace Air Flow Switch, if the Neon indicator lights and unit appears to work with the AFS disabled.
    • Replace Power Supply, if the Neon indicator does not light with the AFS disabled and no cells to short the output.
    • Neon problem, is not likely if test button does not spark. The neon lamp voltage should measure 125 vdc.

Buy a New F300E

complete F300 unitExample, if you need to replace your power box and would like a spare pair of cells. For the best value consider buying a complete new system unit.

All the parts from a new F300E can be simply transferred to any prior F300 of the same size. You can swap over the power box, cells, prefilters, post filters and door to your existing frame. The power box mounts with two screws. The powerbox comes with 120v cord.

  • Power Box Installation
12½ x 20 F300A2012
16 x 20 F300E1001
16 x 25 F300E1019
20 x 20 F300E1027
20 x 25 F300E1035

F300 Series Part Number List

Description 12½ x 20 16 x 20 16 x 25 20 x 20 20 x 25
Access Door 32007528-002 32007528-003 32007528-003 32007528-002 32007528-002
Test Button 137980A 137980A 137980A 137980A 137980A
Collector Cell FC37A1064 FC37A1114 FC37A1130 FC37A1049 FC37A1064
Cell Handle 137266 137266 137266 137266 137266
Prefilter 203369 209989 203368 203370 203369
Cell Key 136518 136518 136518 136518 136518
Power Box PS1202B12 PS1201B20 PS1201B25 PS1201B20 PS1201B25
Switch 203321 203321 203321 203321 203321
Power Supply PS1201A00 PS1201A00 PS1201A00 PS1201A00 PS1201A00
Interlock Switch 4074ETG 4074ETG 4074ETG 4074ETG 4074ETG
Power Box Cover NLA 32004930-002 32004930-001 32004930-002 32004930-001
Terminal Board Front 203329D 203329B 203329B 203329C 203329B
Terminal Board Rear NA 203329A 203329A 203329A 203329A
Hole Plug 203847 203847 203847 203847 203847
Neon Lamp 4074EYS 4074EYS 4074EYS 4074EYS 4074EYS
Air flow Sensor 4074ETJ 4074EZB 4074EZB 4074EZB 4074EZB
Post-Filter 50000293-004 50000293-001 50000293-002 50000293-003 50000293-004
Cell Repair Kit 4074EHG 4074EHG 4074EHG 4074EHG 4074EHG
Ionizer Wire 136434AA 136434BA 136434BA 136434AA 136434AA
240v Conv Transformer NA 203365A 203365A 203365A 203365A
Remote Indicator W8600F W8600F W8600F W8600F W8600F
Hi-Voltage Wire
Red & Black
4074EMN
4074EMP
4074EMN
4074EMP
4074EMN
4074EMP
4074EMN
4074EMP
4074EMN
4074EMP

Warranty on Replacement Parts

Honeywell Two Yeah Limited WarrantyThe Honeywell warranty for F300 Replacement Parts is 2 years from the date of purchase. Our customers simply need to ship us the defective part. We test and confirm defective. We then ship back a brand new part at no charge.

  • Limited 2 Year Warranty

Products [29]

Sort by:
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Honeywell 1000 cfm Electronic Air Cleaner 12½ x 20
(0)
Honeywell 1000 cfm Electronic Air Cleaner 12½ x 20
No Longer Available
Not for Sale.
Honeywell Power Supply F50F Series One 20x12½ Preset 1.05ma
(0)
Honeywell Power Supply F50F Series One 20x12½ Preset 1.05ma
$135.00
Not for Sale.
Test Button Mounts in Door of F50A F50E F50F F300
(0)
Test Button Mounts in Door of F50A F50E F50F F300
$20.00
Add To Cart
Plastic Cell Handle for Honeywell FC37 Series Cell
(0)
Plastic Cell Handle for Honeywell FC37 Series Cell
$11.00
Add To Cart
Plastic Cell Key for Honeywell F50A F50E F50F F300
(0)
Plastic Cell Key for Honeywell F50A F50E F50F F300
$8.00
Add To Cart
On-Off Power Switch for Honeywell F50F F52F F300
(0)
On-Off Power Switch for Honeywell F50F F52F F300
$12.00
Add To Cart
Honeywell Interlock Switch and Bracket for F50F F300
(0)
Honeywell Interlock Switch and Bracket for F50F F300
$27.00
Add To Cart
Strain Relief for Honeywell F300 F50F Power Cord
(0)
Strain Relief for Honeywell F300 F50F Power Cord
$4.00
Add To Cart
Honeywell Power Cord Assembly for F50F F300 120v
(0)
Honeywell Power Cord Assembly for F50F F300 120v
$25.35
Add To Cart
Plug for Honeywell Power Box Hole if not using Power Cord
(0)
Plug for Honeywell Power Box Hole if not using Power Cord
$1.00
Add To Cart
Neon Light Amber for Honeywell F300 F50F
(0)
Neon Light Amber for Honeywell F300 F50F
$19.00
Add To Cart
Honeywell FC37 Series Collector Cell Contact Board
(0)
Honeywell FC37 Series Collector Cell Contact Board
$19.00
Add To Cart
Honeywell Remote Indicator for F300 or F50F Taupe
(0)
Honeywell Remote Indicator for F300 or F50F Taupe
$36.00
Not for Sale.
Commercial High Voltage Wire Red - Sold by the Foot
(0)
Commercial High Voltage Wire Red - Sold by the Foot
$2.00
Add To Cart
Commercial High Voltage Wire Black - Sold by the Foot
(0)
Commercial High Voltage Wire Black - Sold by the Foot
$2.00
Add To Cart
Access Door for F300E F50F 20x20 20x25
(0)
Access Door for F300E F50F 20x20 20x25
$135.00
Select Options
Honeywell Ionizer Wire for 20 inch Cells
(0)
Honeywell Ionizer Wire for 20 inch Cells
$19.00
Add To Cart
Honeywell Enviracaire Postfilter Pair 12½ x 20
(0)
Honeywell Enviracaire Postfilter Pair 12½ x 20
$70.18
Add To Cart
Honeywell Prefilter Pair Commercial Grade for F50F F300 12½x20
(0)
Honeywell Prefilter Pair Commercial Grade for F50F F300 12½x20
$61.00
Select Options
Honeywell Commercial Collector Cell F50 F300 F57 F90 12½ x 20
(0)
Honeywell Commercial Collector Cell F50 F300 F57 F90 12½ x 20
No longer Available
Not for Sale.
1 2 Next Page View All

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