HUMMER H3 AIR DOC HOW TO

Note: If the ports are not labelled, try connecting the recharge kit to both unlabeled ports on the AC hoses. Remove the cap from the low pressure service port labelled L, and connect the AC recharge kit.Turn on the AC and set it to the coldest setting, and the fan speed to maximum.This information is typically located under the hood and/or in the owners manual. Check which type of refrigerant your vehicle uses.You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. One is labelled H for high-pressure and the other one is labelled L for low-pressure. There are two ports in the air conditioning system of H3.

HUMMER H3 AIR DOC HOW TO

How to recharge AC refrigerant in Hummer H3 When the refrigerant leaks again, the leaking component will shine under UV light.

The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. Refrigerant leak in H3 can be caused by leaking O-ring seals, leaking condenser or evaporator core, or a cracked hose. If the refrigerant level goes down again quickly, it means there is probably a leak. Just have it refilled and you can drive with pleasant temperatures again. If you don’t service the AC system in your H3 for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. Ideally, the refrigerant should never leak in a properly sealed AC system, but most car AC systems do leak small amount of refrigerant over time due to minor imperfections and will need recharging after every few years. Refrigerant leakĪ low refrigerant level in your H3 does not necessarily mean there is a leak. This can happen due to a leak or if the AC has not been recharged for a long time. Insufficient amount of refrigerant in the AC system is one of the leading causes of AC blowing hot air in H3.

Hummer h3 air doc