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Mr. Heater Garage Heater Parts
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Mr. Heater MHU45 Compact Unit Heater

Mr. Heater MHU45 Compact Unit Heater Parts

Page A
 Fig #
1
Circuit Board
 $71.82

Part Number: 60105

In Stock, 25+ Available

Ships within 1 business day
 $71.82
2
Limit Sensor
 $4.79

Part Number: 60022

In Stock, 25+ Available

Ships within 1 business day
 $4.79
3
Electrode Igniter
 $6.99

Part Number: 60729

In Stock, 13 Available

Ships within 1 business day
 $6.99
4
Electrode Sensor
 $4.79

Part Number: 60141

In Stock, 9 Available

Ships within 1 business day
 $4.79
5
Burner
 
No Longer Available [ More Info ]

Part Number: 60050

Not Available
6
Ignition Lead
 
No Longer Available [ More Info ]

Part Number: 60045

Not Available
7
Sensor Lead
 
No Longer Available [ More Info ]

Part Number: 60046

Not Available
8
Orifice NAT
 $3.59

Part Number: 60049

In Stock, 1 Available

Ships within 1 business day
 $3.59
9
Orifice LP
 
No Longer Available [ More Info ]

Part Number: 60056

Not Available
10
Gas Valve Nat
 
No Longer Available [ More Info ]

Part Number: 02812

Not Available
11
Gas Valve Lp
 
No Longer Available [ More Info ]

Part Number: 02811

Not Available
12
Transformer
 $21.55

Part Number: 60025

In Stock, 13 Available

Ships within 1 business day
 $21.55
13
Pressure Switch
 
No Longer Available [ More Info ]

Part Number: 60030

Not Available
14
High Limit Sensor Heat Exchange
 $4.79

Part Number: 60015

In Stock, 25+ Available

Ships within 1 business day
 $4.79
15
Pressure Switch Tube
 
No Longer Available [ More Info ]

Part Number: 60031

Not Available
16
Induced Draft Motor
 
No Longer Available [ More Info ]

Part Number: 60020

Not Available
17
Vent Adapter
 
No Longer Available [ More Info ]

Part Number: 60130

Not Available
18
Induced Draft Motor Gasket
 
No Longer Available [ More Info ]

Part Number: 60135

Not Available
19
Back Bracket
 
No Longer Available [ More Info ]

Part Number: 60075

Not Available
20
Front Bracket
 
No Longer Available [ More Info ]

Part Number: 60080

Not Available
21
Louvers
 
No Longer Available [ More Info ]

Part Number: 60100

Not Available
22
Louvers Spring
 
No Longer Available [ More Info ]

Part Number: 60103

Not Available
23
Flue Box
 
No Longer Available [ More Info ]

Part Number: 60085

Not Available
24
Flue Box Gasket
 
No Longer Available [ More Info ]

Part Number: 60090

Not Available
25
Heat Exchange
 
No Longer Available [ More Info ]

Part Number: 60065

Not Available
26
Access Door
 
No Longer Available [ More Info ]

Part Number: 60070

Not Available
27
Front
 
No Longer Available [ More Info ]

Part Number: 60095

Not Available
28
Side Door
 
No Longer Available [ More Info ]

Part Number: 60110

Not Available
29
Wrapper
 
No Longer Available [ More Info ]

Part Number: 60115

Not Available
30
Fan Motor
 
No Longer Available [ More Info ]

Part Number: 60055

Not Available
31
Fan Guard
 
No Longer Available [ More Info ]

Part Number: 60120

Not Available
32
Fan Assembly
 $11.97

Part Number: 60125

In Stock, 25+ Available

Ships within 1 business day
 $11.97
34
Manifold
 
No Longer Available [ More Info ]

Part Number: 60062

Not Available
801
24V Thermostat
 
No Longer Available [ More Info ]

Part Number: 10371

Not Available
802
3" Vertical Vent Kit (45)
 
No Longer Available [ More Info ]

Part Number: F102840

Not Available
803
4" Horizontal Vent Kit (45, 75)
 
No Longer Available [ More Info ]

Part Number: F102845

Not Available
804
Gas Conversion Kit Natural Gas to Liquid Propane
 
No Longer Available [ More Info ]

Part Number: 60067

Not Available
805
Gas Conversion Kit Liquid Propane to Natural Gas
 
No Longer Available [ More Info ]

Part Number: 60066

Not Available
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Questions & Answers

3 amp fuse keep blowing, where could problem be circuit board?
Mark
Hi Mark, it could be the outlet its plugged into, or there could be a short in the wiring. Thank you for your question and good luck with your repair!
My heater starts it's heat cycle normally but when the burner fires. It times out and shuts off the burner ,but the combustion fan keeps running.
Brian for model number MHU50NG,HSU50NG
Hi Brian, thank you for your question. There could be a few parts that you need to check for this issue. However you might first want to check your regulator on the unit. Make sure that you have a good gas flow on the appliance. If that is fine then you may need to check your igniter and thermocouple. Good luck with your repair.
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