MA-025 – DGA 900 Operator Guide – Rev 2.0 12-Apr-19 Page 58 of 92
6.15.1 Error Codes
Table 6-4 lists the PGA error codes. All the service alarm error codes are accompanied by
illumination of the blue Service light that is visible on the front door of the product.
Note: Error codes are offset by 1 from the Modbus register bit numbers.
Note: This information relates to PGA firmware version 18.1.5 for DGA 900.
Table 6-4: PGA Errors
PGA power supply voltage too low
PGA chopper frequency outside range
PGA IR-source outside range
Gas flow lower than limit
Background noise/vibration too high
Not level sensor 1 pulses (level)
Not level sensor 3 (drain)
PGA Air temperature outside limits
Bad communication with control PCB
Gas leak test: Pump pressure too low
Gas leak test: Pressure decay too high
Unusual ambient gas measurements
Check that all oil supply valves are open.
Check that all oil return valves are open.
Oil pump tacho count too high
Oil pump pressure too low
Oil pump speed out of range
Manual oil sampling switch
Oil pump tacho count too low
Temperature Sensor(s) 1 disconnected
Temperature Sensor(s) 2 disconnected
Conditioned oil temp. outside limits
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