Commercial cool ac unit stop sign on

I have a commercial cool that want start and it is getting power

U need that hose to direct the warm air outside the area to be cooled. If you remove it, the hot exhaust will stay in the room being cooled and negate the cold air being directed into the room.

That is why regular room AC units are mounted on window sill. Cold air in, hot air out.

fills up with water every 2 hours empty water back on

It may be the bearings in the motor are dry or out. You coulod pull the motor and fan assembly out and check its operation while it is out of the heater case. Look for anything inside the heater cavity where the motor sits for any problem hindering motor operation.

Mine was full of water. Undo the plugs in the back, drain. Clean air intake screen. Inspect to endure the radiator behind and below are clean.

The only thing that is vaguely related to fuel (which it's not) in your AC unit is R14 refrigerant gas. Under most circumstances, it's described as a sort of sweet smell. If that's what your smelling, it indicates the it's leaking either fro the compressor or the cooling coils. In which case, the unit will stop cooling pretty quickly.

With that said, it mat be a case of the odor is from another outside source and the unit is picking up the odor and circulating through the AC unit. Also, the air intake filter may need to be removed and cleaned and/or replaced. When you remove the filter, it may give you access to view the condensation pan and the cooling cool and heat disbursement (cooling) fins, which all may need cleaning.

If the condensation pan shows signs of mold or mildew. you can clean it with a bleach and water solution and then rinse it thoroughly. For the coils, use warm water and dish washing detergent. Use a vacuum with a hose and brush attachment to clean the cooling fins.

Check outside an take note of any fuel type odors, that the unit may be picking up.

Hope this helped you troubleshoot and solve the problem. Please let me know. Thanks.

7 ton, sounds like a commercial unit, if this so could be three faze. is this fan for cooling the outside condensor coils or the blower motor for moving air through the inside duct work

sounds like it has a refrigerant leak somewhere in the unit.

refrigerators dont come with shrader valves. U must buy a clamp on or weld one on the low side. The clampons are not expensive and are called Bullet piercing valve BPV 31 and fit 3 sizes. Unfortunately u also have a leak somewhere. Most refrigerators use either R12 or 134a

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If your unit is air cooled clean the condenser. If your unit is water cooled check for proper water supply pressure.