What does A:2118 mean on an Ingersoll Rand Xe-series controller?
Short answer: High pressure alarm limit exceeded. If your Ingersoll Rand Xe-series controller (Xe-50M/Xe-70M, R-series rotary) is showing A:2118, 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?
Warning that discharge pressure has exceeded the programmed alarm limit. The compressor continues to run, but it is operating above where it should be.
Which machines show this?
modern Ingersoll Rand R-series rotary screw compressors controlled by the Xe-50M and Xe-70M — the current web-enabled controller family with a full-text display. Faults come in two clearly labeled classes: A: codes are alarms, where the machine keeps running but wants attention (A:2118 high pressure, A:2128 high temperature, A:4804 service due), and E: codes are trips that shut the compressor down (E:0010 emergency stop, E:0020 motor overload, E:0129 excess temperature). Practical tip: the letter tells you your time budget — an A: code is a scheduled-maintenance conversation, an E: code that repeats after one reset is a service call, and third-party code lists sometimes mislabel these, so trust the manual's definition.
What causes it?
- Discharge pressure passing the programmed alarm limit
- Downstream demand dropping suddenly (valves closed)
- Setpoints changed away from the nameplate rating
Can you fix it yourself?
Partly — comparing displayed pressure to the rating and restoring correct setpoints is in-house work; persistent overshoot is not.
Step by step — what to try, in order:
- Compare the displayed pressure to the unit's rated pressure and setpoints
- Check whether downstream demand dropped suddenly (valves closed)
- Verify the pressure setpoints have not been changed from the nameplate rating
When do you need a technician — and why?
If pressure keeps overshooting with correct setpoints, the unloading/inlet valve and blowdown system need service on the pressurized side of the machine.
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 A:2118 mean on an Ingersoll Rand Xe-series controller (Xe-50M/Xe-70M, R-series rotary)?
High pressure alarm limit exceeded. Warning that discharge pressure has exceeded the programmed alarm limit. The compressor continues to run, but it is operating above where it should be.
Can I fix A:2118 on an Ingersoll Rand Xe-series controller (Xe-50M/Xe-70M, R-series rotary) myself?
Partly — comparing displayed pressure to the rating and restoring correct setpoints is in-house work; persistent overshoot is not.
When does A:2118 on an Ingersoll Rand Xe-series controller (Xe-50M/Xe-70M, R-series rotary) need a technician?
If pressure keeps overshooting with correct setpoints, the unloading/inlet valve and blowdown system need service on the pressurized side of the machine. If pressure keeps overshooting the setpoint, call a technician to check the unloading/inlet valve and blowdown system.
Verified against service documentation: Ingersoll Rand Xe-series controller (Xe-50M/Xe-70M, R-series rotary) documentation for A:2118 (ifixcompressors.com)