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Product title:

Harman Red Thermister Exhaust Sensing Probe (ESP): 3-20-00844-AMP

Product rating:
Product price:
$39.99

A $60.00 Savings over the OEM

Product SKU ! 3-20-00844-AMP
Product MPN ! 3-20-00844
Product availability: In Stock
Bullet point features

Frequently Bought Together

Total Price: $74.98

Description

This version of the ESP is the correct part for any model made after 2008. This updated ESP has red wires, as opposed to the previous probes which could have had black, yellow, or white wires. New Circuit boards are now sensing the condition of the differential pressure switch. (FIG 4) 

Notes for ordering replacement parts:

  • If you need a new probe: Order to match your existing probe. Red= #3-20-00844
  • Black, White, or Yellow Probe: Order the black Probe.
  • If you need a new board: Order using the part numbers included here.
  • If installing on a unit with an old probe = Dipswitch #5 “OFF”.
  • With new probe= Dipswitch #5 “ON”.
  • The DVC500 uses two probes, ESP and TCP (temperature control probe). They must be of the same color


     

    This red ESP is used on all models manufactured after 2008 or any model in the list below with an updated controller:




    Replacement For Part Number:

    • 3-20-00844

    View Compatible Models

    UPC: 652174715022

    Compatible Models

      Harman

    • Absolute 43
    • Absolute 43-C
    • Absolute 63
    • Accentra 52i
    • Accentra 52i TC
    • Accentra Cast FS
    • Accentra Insert (Post: 008241201)
    • Advance (Post: 008360001)
    • Allure 50
    • Allure 50-CE
    • DVC 500 (Post: 008065076)
    • HF60
    • Invincible Insert
    • Invincible RS
    • P35i
    • P35i-C
    • P38
    • P38+ (Post: 008190059)
    • P43
    • P43-C
    • P61-A (Post: 008085055)
    • P61-C
    • P61A (Post: 008085803)
    • P68 (Post: 008281295)
    • P68-C
    • PB105
    • PC45 (Post: 008055031)
    • Pellet Pro II
    • PF100
    • PF120
    • XXV (Post: 008200828)
    • XXV TC

    Technical Specs

    High Temp Limit 527°F | 275°C

    Instructions

    Install Instructions For Harman Red Thermister Exhaust Sensing Probe (ESP): 3-20-00844-AMP

    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

    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...


    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 these parts may take up to 4 weeks for processing, and customers must cover shipping.

    Shipping Information

    This Item Qualifies For Free Shipping With Orders Over $199!

    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 $199 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 from us. We do not offer expedited shipping of any kind to Canada. 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
    Jump back to product information tab navigation

    Description

    This version of the ESP is the correct part for any model made after 2008. This updated ESP has red wires, as opposed to the previous probes which could have had black, yellow, or white wires. New Circuit boards are now sensing the condition of the differential pressure switch. (FIG 4) 

    Notes for ordering replacement parts:

    • If you need a new probe: Order to match your existing probe. Red= #3-20-00844
    • Black, White, or Yellow Probe: Order the black Probe.
    • If you need a new board: Order using the part numbers included here.
    • If installing on a unit with an old probe = Dipswitch #5 “OFF”.
    • With new probe= Dipswitch #5 “ON”.
    • The DVC500 uses two probes, ESP and TCP (temperature control probe). They must be of the same color


       

      This red ESP is used on all models manufactured after 2008 or any model in the list below with an updated controller:




      Replacement For Part Number:

      • 3-20-00844

      View Compatible Models

      UPC: 652174715022

      Compatible Models

        Harman

      • Absolute 43
      • Absolute 43-C
      • Absolute 63
      • Accentra 52i
      • Accentra 52i TC
      • Accentra Cast FS
      • Accentra Insert (Post: 008241201)
      • Advance (Post: 008360001)
      • Allure 50
      • Allure 50-CE
      • DVC 500 (Post: 008065076)
      • HF60
      • Invincible Insert
      • Invincible RS
      • P35i
      • P35i-C
      • P38
      • P38+ (Post: 008190059)
      • P43
      • P43-C
      • P61-A (Post: 008085055)
      • P61-C
      • P61A (Post: 008085803)
      • P68 (Post: 008281295)
      • P68-C
      • PB105
      • PC45 (Post: 008055031)
      • Pellet Pro II
      • PF100
      • PF120
      • XXV (Post: 008200828)
      • XXV TC

      Technical Specs

      High Temp Limit 527°F | 275°C

      Instructions

      Install Instructions For Harman Red Thermister Exhaust Sensing Probe (ESP): 3-20-00844-AMP

      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

      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...


      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 these parts may take up to 4 weeks for processing, and customers must cover shipping.

      Shipping Info

      This Item Qualifies For Free Shipping With Orders Over $199!

      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 $199 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 from us. We do not offer expedited shipping of any kind to Canada. 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

      Customer Reviews

      Based on 22 reviews
      100%
      (22)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      J
      John M.
      Thermistor replacement

      Ordered OEM Thermister for my Harman pellet stove. Within an hour or so I received notice it was shipped! I received it safely packaged in less than 3 days. Installed it yesterday. Fits and works perfectly. I’ll be doing business here again. Excellent impressive transaction.

      R
      Rick D.
      aftermarket ESP sensor good

      Replaced original Harman ESP sensor even though problem ended up being the control board. Both product work fine.

      C
      Clifford P.
      Harmon TSP Sensor

      It is a perfect match and installed easy

      N
      Ned W.
      Great

      Fast service

      J
      John B.
      Arrived timely and as advertised

      Easy to order, part arrived on time and exactly as described

      123

      QUESTIONS & ANSWERS

      If your question does not concern this specific product, use our contact form

      Have a Question?

      Be the first to ask a question about this.

      Ask a Question

      Customer Reviews

      Based on 22 reviews
      100%
      (22)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      0%
      (0)
      J
      John M.
      Thermistor replacement

      Ordered OEM Thermister for my Harman pellet stove. Within an hour or so I received notice it was shipped! I received it safely packaged in less than 3 days. Installed it yesterday. Fits and works perfectly. I’ll be doing business here again. Excellent impressive transaction.

      R
      Rick D.
      aftermarket ESP sensor good

      Replaced original Harman ESP sensor even though problem ended up being the control board. Both product work fine.

      C
      Clifford P.
      Harmon TSP Sensor

      It is a perfect match and installed easy

      N
      Ned W.
      Great

      Fast service

      J
      John B.
      Arrived timely and as advertised

      Easy to order, part arrived on time and exactly as described

      123
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