Easy
15-30 minutes
This manufacturer-supplied replacement part is designed for use with Heatstar and Mr. Heater compact unit heaters. The circuit board helps to control the unit. It provides an identical replacement for a missing or a faulty component that was installed on a new unit. Please refer to the appropriate diagrams of your model for the exact location and the correct installation of this part. Keep in mind this high-quality circuit board is sold individually. You will need a screwdriver to take apart the housing in order to gain access to the circuit board.
Circuit Board 60105
OEM part for: Heatstar, Mr. Heater
Part Number: 60105
$85.55
In Stock
Ships within 1 business day 
Jump To:
Frequently Purchased Together ?
Compatibility
This part will fit the following 3 machines
Heatstar
HSU45 Compact Unit Heater View Diagrams & Manuals
Mr. Heater
MHU45 Compact Unit Heater View Diagrams & Manuals
MHU75 Compact Unit Heater View Diagrams & Manuals
This item works with the following types of products:
- Heater Parts
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
14
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
- 2
Mr. Heater circuit board.
They had the part in stock and I had my heater up and running in less than a week. I have used eReplacement several times over the years and am well pleased.
Guest -
October 26, 2023
Verified Purchase
This was an easy repair with the most challenging aspect being accessing the unit.
The part I received was perfect fit and replacement for the fried part. The hardware and board were spec on.
I have used eReplacementParts before with great success and I will continue to in the future. Very responsive and informative.
Guest -
May 20, 2023
Verified Purchase
Excellent replacement
Perfect match. Easy install, no guessing hookup! Very happy with packaging,product condition and delivery. Five star👍👍👍👍👍
Guest -
November 30, 2021
Verified Purchase
excellant service..!!
the part was in excellant condition and arrived very quickley, the furnace runs great..!!
Guest -
March 15, 2021
Verified Purchase
Easy Circuit Board Replacment
Part came as described and solved my issue with my Big Maxx Heater.
Thanks,
Dave
Guest -
February 2, 2021
Verified Purchase
Man cave heater
Perfect match replacement. Arrived on time.
Steve -
October 29, 2020
Verified Purchase
Finally fixed!
This was the exact replacement part I needed to provide much needed heat to a grateful customer.
Guest -
January 28, 2020
Verified Purchase
Great circuit board
No problem with shipping. Took old board out, put new one in. Powered board up, furnaced work the first time and continues to run great. Thank you very much for shipping the board promptly and having a quality product.
Guest -
November 25, 2019
Verified Purchase
Heater was flashing two lights. Failed ignition. Circuit board fixed the problem
Perfect match for my Big Maxx 45,000 btu unit
Daniel -
November 25, 2019
Verified Purchase
Perfect fit
Circuit board was the exact replacement. No troubles at all.
Guest -
November 25, 2019
Verified Purchase
t
t
t -
t days ago
Verified Purchase
eReplacementParts Team
t
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Circuit Board
No questions have been asked yet
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Board would not produce a spark to ignite gas.
Marty - December 5, 2015
👍 10 of 11 people found this instruction helpful
Tool Type
Heater
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Power Drill
Parts Used
Pull old board out, then install the new board then wire for wire exchange.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
I have a 2008 75000btu big max Mr heater. The problem was, the fan would cycle on, gas valve would open but the igniter would not ignite.
Gordon - April 11, 2016
👍 7 of 7 people found this instruction helpful
Tool Type
Heater
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Nutdriver
Parts Used
My heater is hung in the corner with cabinets on both sides. This made it more difficult, but not impossible. I ordered a control board I removed wires from the old board and plugged into the new board. Then I unscrewed the old board, and removed, and then installed the new board. Turned the power on and everything worked. Been running for a week now and no problems. I am glad it was the board because the igniter looks like it would have been worse.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Replaced bad circuit board
Donn - February 24, 2016
👍 4 of 4 people found this instruction helpful
Tool Type
Heater
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Nutdriver, Adjustable Wrench
Parts Used
Remove right access panel then replace circuit board. Replace one wire at a time.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The igniter circuits had failed on both of my Mr. Heater ceiling mounted propane heaters in my shop.
James - December 29, 2017
👍 3 of 3 people found this instruction helpful
Tool Type
Heater
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Nutdriver
Parts Used
My shop has a high ceiling (14' at the eaves) so I had to perform the repair while on a 15" fruit ladder. It is very straightforward: Disconnect power; remove the side cover; remove the four sheet metal screws that hold the circuit boards at the corners; swap the wires to the new board; secure the new boards with provided screws and spacers; replace the side cover; restore power --- and they worked perfectly!
The original boards had 3/8" spacers to allow air flow between the circuit boards and the sheet metal to which they are attached. That metal separates the burner from electrical assemblies in the heater. The boards from eReplacementParts had 1" spacers that may allow the boards to last longer. Put the new, longer screws through their respective holes, wrap with one wrap of electrical tape, and slide the 1" nylon spacers over the tape. That will hold the spacers in place until you are ready to secure the board to the furnace.
The original boards had 3/8" spacers to allow air flow between the circuit boards and the sheet metal to which they are attached. That metal separates the burner from electrical assemblies in the heater. The boards from eReplacementParts had 1" spacers that may allow the boards to last longer. Put the new, longer screws through their respective holes, wrap with one wrap of electrical tape, and slide the 1" nylon spacers over the tape. That will hold the spacers in place until you are ready to secure the board to the furnace.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Circuit board had intermittent problem that prevented the burner from lighting.
Bernard - November 30, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Heater
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set
Parts Used
Turned off power to the heater. Disconnected the wiring to the circuit board being careful to insure where they came from. Removed the mounting screws. Reinstalled the new circuit board using the new stand off parts and screws. Reconnected the wiring connectors. Turned on power to the heater and then adjusted the thermostat to call for heat. The unit then went through its start up functions and the burner lit. All has been well since.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Bad Circuit Board
Tom - March 10, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Heater
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
Replace the board as directed and exchanged wire for wire and it works like a champ. With no issues.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Ignitor would not fire to start furnace
Harry - February 14, 2021
Tool Type
Heater
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wire cutters to snip the wraps.
Parts Used
First I changed the ignitor. That did not work.
Next I changed the circuit board.
It’s been working fine for two weeks.
First turn off power.
Remove side cover.
4 screws hold circuit board on. They were hard to reach. Used a socket and various lengths of socket extensions to take the circuit board out. 1/4 inch drive ratchet.
Changed the wires one at a time as to not make any mistakes.
I only put 3 of the 4 screws back. Could not easily get the lower one in the back on.
Three of the 4 was fine.
Put the cover back on, turned on the power and it’s been working fine for 2 weeks.
The Mr Heater was hung on a ceiling in my garage. Hardest part was working off the step ladder, trying to reach the screws.
Since I changed the ignitor first, then ordered the circuit board, I was without a heater for two weeks.
Next I changed the circuit board.
It’s been working fine for two weeks.
First turn off power.
Remove side cover.
4 screws hold circuit board on. They were hard to reach. Used a socket and various lengths of socket extensions to take the circuit board out. 1/4 inch drive ratchet.
Changed the wires one at a time as to not make any mistakes.
I only put 3 of the 4 screws back. Could not easily get the lower one in the back on.
Three of the 4 was fine.
Put the cover back on, turned on the power and it’s been working fine for 2 weeks.
The Mr Heater was hung on a ceiling in my garage. Hardest part was working off the step ladder, trying to reach the screws.
Since I changed the ignitor first, then ordered the circuit board, I was without a heater for two weeks.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Circuit board died
Todd - December 30, 2020
Tool Type
Heater
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
Parts Used
Just swapped out old for new.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Circuit Board failed. Replaced the bad board with a replacement from Replacement parts
Dave - December 16, 2020
Tool Type
Heater
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
Parts Used
1. Remove 4 stand off screws from circuit board. 2, disconnected all wire connections 3. Removed bad circuit board. 4. replaced circuit board. 5. assembled 4 stand off screws to new circuit board.. 6.Reconnected all wire harness connections.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Heater burner would not stay on. Replaced the igniter and heat sensor first.
Robert - April 21, 2020
Tool Type
Heater
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Socket set, Nutdriver, Adjustable Wrench
Parts Used
Shut gas off, disconnected gas line.
Turned power off.
Took pictures and made notes.
Disconnected and unplugged all wires and connections
Unbolted the circuit board.
Double checked all connections points with the new one, there were some differences in parts location on the new board.
Re-connected all the wires after installing the new board.
Worked fine.
Turned power off.
Took pictures and made notes.
Disconnected and unplugged all wires and connections
Unbolted the circuit board.
Double checked all connections points with the new one, there were some differences in parts location on the new board.
Re-connected all the wires after installing the new board.
Worked fine.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
