AirSmart G2
Cross-branded onto several sister brands under Ingersoll Rand's Gardner Denver group — always check the actual controller part number.
Manufacturer
Gardner Denver
Display
5-inch color touchscreen.
Years produced
~2005 – present (successor to original AirSmart).
Power supply
24 VDC.
Ambient range
0 – 55 °C.
Protection rating
IP54 front.
Relay outputs
Star/delta or across-the-line, blowdown, dryer, alarm.
Replaces
Original AirSmart (mono LCD)
Used on
- GD EnviroAire T-series
- L-series 15–350 hp (post-2005)
- Robuschi & CompAir cross-badged units (regionally)
Features
- Auto-Sentry-like scheduling
- AirSmart Web remote monitoring (option)
- Multi-unit sequencing built-in (up to 4)
- Trend graphing on-screen
Interfaces
- Ethernet (Modbus TCP)
- RS-485 Modbus RTU
- USB (data)
Sensor inputs
- Airend discharge temp
- Package discharge pressure
- Sump pressure
- Oil filter & separator ΔP
Common fault codes
First checks
- Cooler cleanliness & fan
- Fluid level & thermostat
- Verify RTD
First checks
- Reset OL, measure phase currents
- Check for single-phase / voltage imbalance
- Contactor mechanical
First checks
- Replace filter
- Verify sensor reading
First checks
- Ribbon / CAN cable to expansion
- Drive power supply
- Firmware match after board swap
Fault list is non-exhaustive and firmware-dependent. Always confirm against the controller’s on-screen help or OEM manual.
Wiring notes
- 24 VDC I/O
- Do NOT parallel Ethernet with high-voltage runs inside the panel
Known issues & field notes
- Firmware differences between L-series and EnviroAire — always match part number when swapping
- USB port cover breaks off in dirty shops — replace as PM item
Levels: User (no PIN), Service (default 3573 = 'GD-SE' on many builds, often changed at commissioning), Factory (GD-only).
Manuals & literature
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