Why is the dew point too high on my Atlas Copco Full-Feature dryer?
Short answer: Integrated dryer not reaching dew point. If your Atlas Copco GA Full-Feature (Elektronikon Touch, integrated dryer) is showing Pressure dew point too high (dryer), the controller has logged a specific, documented condition. This page covers what it means, what causes it, what you can safely fix yourself, and when — and why — it takes a technician.
What exactly is the machine telling you?
Documented causes: air inlet temperature to the dryer too high, ambient temperature too high, shortage of refrigerant, refrigerant compressor not running, or evaporator pressure too high.
Which machines show this?
the current generation of Atlas Copco GA Full-Feature compressors — '+' era GA rotary screws with the built-in refrigerant dryer, run by the Elektronikon Touch controller. The FF suffix on the nameplate marks the integrated dryer, and on these machines the touchscreen monitors pressure dew point alongside the compressor's own signals. The instruction book handles dryer trouble with a documented cause list — inlet air too hot, high ambient, refrigerant shortage, refrigerant compressor not running, evaporator pressure too high — rather than a bare code number. Practical tip: split the causes into halves — airflow items (aftercooler, condenser, ventilation) are yours to fix, while anything touching the refrigerant circuit is certified-technician work by law and by design.
What causes it?
- Air entering the dryer too hot — dirty aftercooler or hot room
- Ambient temperature too high around the package
- Dryer condenser dirty or its fan not turning
- Refrigerant shortage, dead refrigerant compressor, or high evaporator pressure
Can you fix it yourself?
Partly — ventilation, aftercooler cleaning, and condenser checks are legitimate in-house fixes and clear the airflow-driven cases.
Step by step — what to try, in order:
- Check and lower ambient/room temperature and improve ventilation
- Clean the aftercooler so cooler air enters the dryer
- Verify the dryer's condenser fan rotates correctly and the condenser is clean
- Do not attempt refrigerant work in-house
When do you need a technician — and why?
Anything on the refrigerant side — shortage, leaks, a refrigerant compressor that won't run — is sealed-system work that requires a certified refrigeration technician.
If it does come to a service call and you're in Nashville, TN or Birmingham, AL, we maintain independently compiled lists of local companies that service industrial air compressors — real businesses with verified contact information, none of whom paid to be listed.
Related questions
What does Pressure dew point too high (dryer) mean on an Atlas Copco GA Full-Feature (Elektronikon Touch, integrated dryer)?
Integrated dryer not reaching dew point. Documented causes: air inlet temperature to the dryer too high, ambient temperature too high, shortage of refrigerant, refrigerant compressor not running, or evaporator pressure too high.
Can I fix Pressure dew point too high (dryer) on an Atlas Copco GA Full-Feature (Elektronikon Touch, integrated dryer) myself?
Partly — ventilation, aftercooler cleaning, and condenser checks are legitimate in-house fixes and clear the airflow-driven cases.
When does Pressure dew point too high (dryer) on an Atlas Copco GA Full-Feature (Elektronikon Touch, integrated dryer) need a technician?
Anything on the refrigerant side — shortage, leaks, a refrigerant compressor that won't run — is sealed-system work that requires a certified refrigeration technician. Refrigerant shortage, leaks or a dead refrigerant compressor require a certified refrigeration/service technician.
Verified against service documentation: Atlas Copco GA Full-Feature (Elektronikon Touch, integrated dryer) documentation for Pressure dew point too high (dryer) (manualslib.com)