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Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP

Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP
Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP

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Product rating:
Product price:
$49.99

$100.00 less than the OEM

Product SKU ! 3-20-11744-AMP
Product MPN ! 3-20-11744
Product availability: In Stock
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Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMPRelated Product Title Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744
$49.99In stockRelated Product Price: $149.99 In stock
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Total for 5 items $259.95

Description

Replacement Harman Black Exhaust Sensing Probe (ESP) for select pellet stoves.

A 3 blink error code means that the control board has not detected the ESP (Exhaust Sensing Probe) at startup or that it lost communication with it while the unit was running.

  • Verify that the ESP probe is clean by removing it and looking at it, clean if necessary. It should be a silver-colored metal.
  • If you replace it, make sure you replace it with the proper one for your unit. There are two versions; a probe with black wires and a probe with red wires, replace accordingly.
  • If the probe itself looks “bent” it’s probably broken.
  • Before replacing the probe verify that the probe itself is actually plugged into the controller and the contacts on the controller are “clean”
  • On the front side of each controller, there is a red rectangle box with a series of 8 micro-switches called DIP switches. The controller must be removed from the unit to access them. DIP switches allow multiple stoves to use the same controller but run different programs according to the stove’s required functions. The #5 DIP switch must be set to “OFF’ or down for ESP probes with black wires and set to “ON” for DIP switches with red wires. 3 blink error codes can be caused by installing the improper colored wired ESP with the wrong DIP selection.

Also compatible With Eco Choice BA100

Fitment Note: There are multiple colors of ESP probes for Harman stoves. If your stove has a Black, White, or Yellow probe, this black probe is the correct replacement. If you have a Red ESP Probe, you require part 3-20-00844

Fitment Note (PB105): These models make use of an extension cable which looks like it is part of the stoves original ESP. You will need to disconnect your existing ESP from the extension cable, and plug the replacement in. This will allow you to extend the cables length to complete the entire run.

UPC: 652174647279

Replacement For Part Numbers:

  • 3-20-11744
  • 1-00-00744
  • 3-20-00744

Compatible Models

These are all of the confirmed compatible units for this product. Where To Find Your Make & Model

Harman

Technical Specs

Check these against the part you are replacing before ordering. If a dimension does not match, contact us and we will confirm the fit.

Length (in) 3 ½"
Width (in) ½"
Height (in) ¼"
Wire Connectors Molex - 2 Pin
Probe Length 2 1/2"
Wire Length 60"
Weight .5 oz

Wiring and Connectors

Wire, terminals and connectors for the job, in case yours are worn or the ones you have do not reach.

Instructions

Install Instructions For Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP

Instructional Documents

Instructional Videos

Instructional Notes

You must be careful not to bend an ESP probe if removing it for maintenance purposes. Bending the sheath of the probe will usually ruin the sensor. Likewise, when cleaning your stove, care should be taken to not bend the sensor when cleaning. Do not send brushes or vacuum tools through the stove blindly. Before cleaning your stove for the first time, find the ESP probe and make sure that it is not going to be in the way when cleaning. If it is, remove it from its mount prior to performing work.


Using a 1/4" socket, remove the mounting screw and remove the thermocouple from the stove. Trace the wires back to the control board and unplug the wires.


DIP Setting by Stove Model

Troubleshooting

Troubleshooting Notes

The Control Board/ESP combination is responsible for all high limit safety control. There are 2 high limits, one normal operation high limit and one backup high limit. The control has an automatic diagnostic circuit that continuously monitors the ESP and Room Sensor for faults. If a fault should occur, the control sends a status alert and at the same time the unit goes down to minimum feed/ minimum burn as a safety condition.


In 2008 Harman changed the ESP probe for all units going forward. The change is notable by the color of the ESP wires, Black wires are Pre 2008 and Red Wires are Post 2008. THESE WERE ROLLING CHANGES AS NEW UNITS WERE MADE AND NOT ALL CHANGES HAPPENED JAN 1 2008.


  • For most units, dependent on the controller and/ revision, red thermocouples can be use in place of black thermocouples if the #5 DIP switch settings on the control board are set to 'ON', or 'UP'.


  • Black thermocouples have the #5 DIP switch setting 'OFF', or 'DOWN' however; red thermocouples are slightly larger in diameter than black ones and often will not fit into the mounting holes of black thermocouples on some units.


  • RED ESP wires cannot be cut and spliced.


  • Circuit board revisions ultimately dictate whether a black or red ESP should be used. See the chart below...

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Warranty

Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Items must be used in accordance with the manufacturers guidelines to qualify for warranty replacement. Please be advised that warranty claims for special parts may take up to 4 weeks for processing, and customers are responsible for return shipping charges.

Shipping Information

This Item Qualifies For Free Shipping With Orders Over $99!

When Will My Order Ship?
All orders are typically processed within 24 hours of receiving payment and are shipped from us same day if placed before our shipping cutoff time (Monday - Friday: 12PM, Saturday: 10AM, Sunday: No Shipping), orders placed after our cutoff time are shipped the next morning.
Do You Offer Express Shipping?
Yes! Please note the shipping times are based on business days, weekends and holidays do not count to the delivery date. Please see our expedited ship time schedules here.
How Does Free Shipping Work?
Most orders over $99 qualify for free shipping! Orders which ship for free are shipped with either USPS or UPS based on our discretion. If you are using a PO box, free shipping orders will always go USPS.
Do You Ship To Canada?
We ship to Canada! We estimate USPS to take 4-10 days once receiving your package. Please note, we are unable to track US Postal packages once they cross the US border and cannot guarantee shipping times. All customs fees incurred are the responsibility of the customer and are not included in the total price. Please allow an extra 2-5 days for all shipments to Canada. Free shipping is not available to Canada.
Do You Ship To Alaska Or Hawaii?
We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.
Do You Ship Outside The US Or Canada?
Unfortunately, at this time we do not offer international shipping other than to Canada.
Shipping Time Estimations
For information on shipping time estimations, see the Shipping Information & Transit Times on the shipping page.
Learn More About Our Shipping Information

Questions & Answers

If your question does not concern this part, contact us directly or read our FAQs.

  1. Will this work for my P61A pellet stove My part number is 3-20-00744

    Asked by Shawn on Apr 29, 2019

    If the wires coming from the probe are black and/or black with white stripe you can use 3-20-11744(AMP). However, if the wires are red, you will need to use 3-20-00844(AMP).

    Answered by Stove & Grill Parts For Less on Apr 29, 2019

Every question is read by our team before it appears here, so it will not show up right away - we will email you the answer.

Customer Reviews

Based on 28 reviews
100%
(28)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
M
MATTHEW K.
New Generic ESP for a Harmon P61-2

I purchased the Black wire version for my Harman P61-2... never been change since I purchased the stove in 2009 and I work this stove hard. I was skeptical of buying a non-Harman part but for the $49.00 vs. the original Harman price I was willing to give it a shot and the stove works like a charm! Back doing what it's been doing for nearly 20 years. VERY HAPPY and warm!

P
Paul B.

As advertised, fixed the store's issue.

J
Joel B.

Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP

K
Kevin S.
Fast service

One Day UPS was amazing

G
Gerard M.
Worked as expected.

Great replacement for a Harman advance!

123

Still have a question?

Call or email us and we will help you find the right part.

Contact us 1-508-392-9831
Mon–Sat 9AM–5PM · Sun 10AM–3PM ESTShipping policy · Return policy · FAQs

Customer Reviews

Based on 28 reviews
100%
(28)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
M
MATTHEW K.
New Generic ESP for a Harmon P61-2

I purchased the Black wire version for my Harman P61-2... never been change since I purchased the stove in 2009 and I work this stove hard. I was skeptical of buying a non-Harman part but for the $49.00 vs. the original Harman price I was willing to give it a shot and the stove works like a charm! Back doing what it's been doing for nearly 20 years. VERY HAPPY and warm!

P
Paul B.

As advertised, fixed the store's issue.

J
Joel B.

Harman Black Thermistor Exhaust Sensing Probe (ESP): 3-20-11744-AMP

K
Kevin S.
Fast service

One Day UPS was amazing

G
Gerard M.
Worked as expected.

Great replacement for a Harman advance!

123