Control Module HVAC: Service Precautions

All control modules are more or less sensitive to static electricity and can, if they are handled incorrectly, be so seriously damaged as to render, them unserviceable. For this reason, it is important that the following rules are followed in all situations where the control module must for some reason be dismantled or changed.
- Avoid unplugging or removing the control module unless it is absolutely necessary.
- Never touch the connector pins and never place the control module so that the pins can come into contact with anything.
- Before unpacking a new control module, ground the packaging to the car body work and open the packaging as short a time as possible before installation the control module.
- When working with the control module, it is important to regularly ground yourself. This is especially important when you have been sitting in the car or when you have changed position or moved around the car. This is especially important in climatic conditions with very dry air (for example during the winter in cold markets).
- Avoid wearing clothing made of synthetic materials.
- Always handle control modules which are suspected of being faulty in the same manner. This increases the possibility of localizing the cause of the fault.