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60030 Pressure Switch Glee Ruler XHFY2004G 22" for Mr Heater Enerco Compact Unit Heaters
60030 Pressure Switch for Mr Heater and Heatstar overhead heaters is a Glee Ruler XHFY2004G, rated at 0.22 of Water Column, is used for 45,000 and 75,000 BTU/HR garage and workshop Compact Unit Heaters using Natural Gas (LP) or Liquid Propane (NP) by Enerco.
The 60030 Pressure Switch fits the following Mr. Heater Big Maxx models:
MHU45LP
MHU 45LP
MHU45NP
MHU 45NP
MHU75LP
MHU 75LP
MHU75NP
MHU75NP
The 60030 Pressure Switch fits the following Heatstar models:
HSU45LP
HSU45NP
HSU75LP
HSU75NP
This 60030 Pressure Switch was made by Glee Ruler under the part number XHFY2004G
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Before Replacing the switch please take a minute to check these instructions that other customers have found helpful to get back up and running.
The very first question is always, is this connected properly?
Have the leads been reversed leads?
Is the Vacuum hose connected to the hose barb marked "L"
Has the hose barb on the exhaust blower fan been cleaned out?
These get clogged and will cause the switch not to operate.
I am getting a 3-flash code; does that mean my pressure switch is bad?
Most likely not.
The pressure switch being faulty is the least likely issue.
Please execute the following tests to eliminate all possibilities.
First, pull the vacuum tube off the pressure switch and blow into it.
If it does not have good flow or no flow at all, then clean out the vacuum hose connector with a 5/64in drill bit.
If it is not that, then turn the heater on with the vacuum hose connected to the pressure switch.
Turn the thermostat on then suck on the hose to create a vacuum and pinch the hose to keep the pressure.
If the heater fires up, reconnect the hose to the hose connector on the vent motor.
Once that is done, if this shuts the heater down then you have something blocking your exhaust.
If after these steps the heater still does not function, then replace the pressure switch.