I and a coworker, had to do PM (preventative maintenance) on thirty ICP (International Comfort Products) Gas Pack units at a local high school for the upcoming winter. Basically, checking/cleaning the igniters, flame sensor, blower motor amp draw, testing the run capacitor, and putting in new filters.
I thought I would make a video that turned into three short ones and take some pictures for anyone that needs to do this or just needs information in general.
The first thing I do is swap out the filters, which the unit has two; one sits on top of the other. Wear gloves or be careful when handling filters of this type, as the metal rings will cut you.
Basically, power off the unit, and install the new ones making sure the arrow is pointing in the correct direction.
Replace the Air Filters
- Turn the power off.
- Remove the panel door (5/16 screws).
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- Remove the old filters.
- Install the new ones making sure the arrow is pointing correctly.
Testing the Igniter, Flame Sensor Components
- Take the panel door off to the furnace components.
- I always brush the dust out .
- Next check and clean the igniter and flame sensor.<.li>
- Here is the flame sensor on the top and the igniter is on the bottom glowing.
- If the flame sensor is dirty clean it with a little piece of Emory cloth.
- Next we need to check the blower motor Amp draw. Turn on the heat by jumpering white and red.
- With the blower motor running test the Amp draw.
- Look at the flames to be on and if all is good.
- Put the wiring back together correctly so the thermostat can regulate it.
Checking the Run Capacitor
- Take the door panel off.
- Use a meter to test the Run Capacitor this one is rated at 15uf.
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