Alarms in Gardner Denver Compressor

The Purpose of Alarms in Compressors

Alarms in Gardner Denver Compressor are an integral part of modern compressor systems. They serve as early warning mechanisms, alerting operators to potential issues before they escalate into significant problems. This preventive approach not only enhances safety but also ensures the longevity of the equipment. By monitoring critical parameters, alarms help in maintaining optimal performance and avoiding costly downtime.

Alarm Code list

Code	Additional Info
A	Warning: Oil filter service due
E	Warning: Annual service due
S	Start inhibit
R	Run inhibit
I	Information

What is Start Inhibit (S)

A start inhibit is a fault condition that may present a danger or cause damage to the compressor if it is started while that condition is present.

• Prevents compressor start if a potentially damaging condition exists
• Only triggered when attempting to start from “ready” state
• Self-resets once condition clears
• Displayed but not logged in fault log

Gardner denver compressor fault codes: Start Inhibit (S)

Example

Code	Text	Additional Info
S:3500	Start inhibit	Start inhibit: door open
S:3600	Start inhibit	Start inhibit: Function disabled in Q1 CC1 software

What is Run Inhibit (R)

Run Inhibit (R) alarm holds the compressor in standby rather than shutting it down, and automatically clears itself once the condition is resolved.

•  Prevents compressor from running if a potentially damaging condition exists
• Only triggered during a start sequence
• Self-resets but holds compressor in standby until condition clears
• Displayed but not logged.

Example:

Code	Text	Additional Info
R:3123	PD TEMP Low	Run inhibit: Compressor outlet temperature low
R:3137	INT PRESS high	Run inhibit: Internal pressure high

What is Shutdown Fault (E)

Shutdown Fault is a serious fault condition that will automatically cause the compressor to shut down to prevent damage. And it requires manual intervention by an operator to reset the fault after the underlying issue is addressed

• A condition that could damage the compressor if it persists
• Causes the controller to stop/shutdown the compressor
• Must be manually reset after condition is resolved

Example:

Code	Text	Additional Info
E:4816	Oil service	Immediate stop: Oil service due
E:4806	Air filter SERV	Immediate stop: Air filter service due

What is Advisory/Maintenance Alarm (A)

Advisory/Maintenance Alarm signals a non-critical condition that requires attention, such as an abnormal sensor reading or that maintenance is due

– Does not indicate immediate danger.

– Does not shut down the compressor or affect its normal operation.

– Indicates need for maintenance or that a sensor reading is high.

Example:

Code	Text	Additional Info
A:4807	Oil filter SERV	Warning: Oil filter service due
A:4821	Annual service	Warning: Annual service due

Gardner denver compressor fault codes

Code	Message Text	Additional Information
A:0008	Dryer power SUP	Dryer power supply (Digital input not OK)
A:0030	Door open	Enclosure door open (Digital input not OK)
A:0031	CAB FTR DP ALM	Cabinet filter differential pressure (Digital input not OK)
A:0040	Oil level alarm	Oil level alarm (Digital input not OK)
A:0041	Oil TEMP HI	Oil temperature high (Digital input not OK). Disabled in Q1CC1
A:0050	Dryer alarm	Refrigerant dryer alarm (Digital input not OK)
A:0070	Fan motor alarm	Fan motor alarm (Digital input not OK)
A:0071	VSD fan MOT OVLD	VSD Fan motor overload (Digital input not OK). Disabled in Q1CC1
A:0072	FAN MOTOR OLVD	Fan motor overload (Digital input not OK). Disabled in Q1CC1
A:0085	HI MTR STR HR	Maximum amount of motor starts per hour exceeded. OFF by default in Q1CC1
A:0119	DEL PRESS high	EO PRESS HIGH. Equipment outlet pressure high.
A:0129	COMP out TEMP HI	COMP out TEMP HI. Compressor outlet temperature high.
A:0139	INT PRESS high	EI PRESS high. Equipment internal pressure high.
A:0149	EQUIP INT TEMP	EQUIP INT TEMP. Equipment internal temperature high.
A:0151	oil P LO limit	Oil pressure low limit. Disabled in Q1CC1
A:0160	Dew Point	Dew point (Digital input not OK). Disabled in Q1CC1
A:0180	Inlet CALIBR.	Disabled in Q1 CC1
A:0200	COOL water alarm	Cooling water alarm. (Digital input not OK)
A:0201	CNDS drain alarm	Condensate drain alarm. (Digital input not OK)
A:0620	Main motor OVLD	Main motor overload from 3rd party drive.
A:0809	DIFF PRESS high	Differential pressure high. EI – EO pressure out of permissible range.
A:0901	CONF alarm 1	Configurable alarm 1. (Digital input not OK)
A:0902	CONF alarm 2	Configurable alarm 2. (Digital input not OK)
A:0903	CONF alarm 3	Configured alarm 3. (Digital input not OK)
A:1001	COMP OUT T° H EN	Compressor outlet temperature high pre alarm. See parameter 16.42
A:1002	COMP OUT P LL A	Delivery pressure low level pre alarm. See parameter P16.43
A:1003	Main MTR TEMP HI	Main motor temperature high. (Digital input not OK)