S Bulletin 044 - A5 Error Code

A5 Error Code

The A5 error code is classified as a low-pressure error code. The following troubleshooting must take place as a preliminary troubleshooting measure.

 Check Points

1. Enter function setting F3-40 before powering down the system to allow the error code to be fully reset.
2. Check running pressures with gauges or through service tool.
3. Perform leak checks using a sniffer, soap bubbles, or UV dyes.

If the following troubleshooting procedures are performed and the issue persists then the problem may be caused by an electrical failure.

• This error code will only occur with a 1 to 1 matchup indoor and outdoor.
• The code only shows up when the outdoor ambient temperature reaches temperatures below 32 degrees Fahrenheit.
• This is a “fix on fail” scenario meaning it will be serviced on site by an authorized licensed technician.

Attached: Service Bulletin 044 A5 Error Code

 Disclaimer:

Always Practice Safety First. Turn off power before commencing any work. In order to perform some of these tests an electrical and/or refrigerant license is required. We strongly advise to check the Service manual for more detailed explanation. If you are not sure about these recommendations please contact our technical support line at 866-952-8324. Fujitsu General America, Inc. is not responsible for any damage and/or harm caused by unsafe acts during these tests.