Error Codes

ERRORS, FAULT CODES, AND TROUBLESHOOTING

If you are experiencing any error or fault codes with the Groeneveld Twin system, we have compiled a list of these codes for your reference. For further assistance with troubleshooting, we recommend consulting the comprehensive Twin 3 General Manual provided below.

When ignition is switched ON the 3-digit display forms an rotating clock indicating it’s communication with the pump control unit. After 10 seconds the preset duty mode selection appears along with the green LED.


Light duty - Greasing mode with long intervals. (Decreased greasing output)



 


Medium duty - Greasing mode with medium intervals. (Normal greasing output)



 


Heavy duty - Greasing mode with short intervals. (Increased greasing output)



 


*Pump performs a single cycle test (LED flashes slow). (See paragraph 3.2 Twin 3 Manual).

 

*Pump performs multiple cycle test (LED flashes fast). (See paragraph 3.3 Twin 3 General Manual).​


Pump performs a number of fast automatic cycles. 

(See paragraph 3.4 Twin General Manual) 


Cause

Minimum level in the reservoir has been reached.  

Solution

 Resets itself by refilling the reservoir.

Cause

 Duty cycle selection possible only after the error has been solved. 

Solution

 (See “Twin-3 display error codes” on page 11).

 +    E11 due to successive no pressure in line-A

Cause

The pressure switch did not close during a greasing cycle in primary line-A. Possibly caused by:

A) Broken / damaged primary A line

B) Metering unit causes internal by pass

C) Air trapped into pump and or primary line-A

Solution

A) Check condition of primary lines and its connectors. Replace or repair when necessary.

B) Check with the use of an Uni- or PC-GINA whether the timer activation options are set correctly. Change these parameter settings when necessary.

C.1) Refill reservoir until reservoir is bled. See paragraph 4.5.2 “Filling the reservoir”.

C.2) Bleed the pump and primary lines. Proceed with paragraph 4.3 & 4.4 “Bleeding pump & system”



 


Cause

The pressure switch did not close during a greasing cycle in primary line-B.

Possibly caused by:

a) Broken/damaged primary line-B

b) Metering unit causes internal by pass

c) Air trapped into pump and or primary line-B


Solution

a) Check condition of primary lines and its connectors. Replace or repair when necessary

b) Proceed with “Procedure when an internal system leak is sus- pected” on page 43 of the Twin 3 Manual

c.1) Refill reservoir until reservoir is bled. See paragraph 4.5.2 “Filling the reservoir”

c.2) Bleed the pump and primary lines. Proceed with paragraph 4.3 & 4.4 “Bleeding pump & system”

 

Cause

The pressure switch was still closed at the outset of a cycle in primary line-B.

Possibly caused by:

a) Interrupted PS wiring harness to where wires are joined.

b) 5/2-way valve did not operate correctly.

c) Pressure switch failed/broken.

Solution

a) Check wiring and connectors. Replace or repair when necessary.

b) Check 5/2-way valve and operate manually with the use of an Uni- or PC-GINA.

Replace or repair when necessary.

c) Check and or replace pressure switch (valve).



 


Cause

The pressure switch was still closed at the outset of a cycle in primary line-B.

Possibly caused by:

a) Interrupted PS wiring harness to where wires are joined.

b) 5/2-way valve did not operate correctly.

c) Pressure switch failed/broken.

Solution

a) Check wiring and connectors. Replace or repair when necessary.

b) Check 5/2-way valve and operate manually with the use of an Uni- or PC-GINA.

Replace or repair when necessary.

c) Check and or replace pressure switch (valve).



 


Cause

 Cycles that have not been per- formed, due to grease reservoir ran empty and disabled the pump, caused by:

a) Max. number of cycles with an activated low level switch exceeded (with pump low level stop activation).

b) A combination of an activated low-level switch and initial “no pressure line-A or -B” error, indicating the pump ran out of grease.

Solution

a) Refill the reservoir. Proceed with paragraph 4.5.2 “Filling the reservoir” procedure.

b) Refill the reservoir. Proceed with paragraph 4.5.2 “Filling the res- ervoir” procedure. Thereafter, proceed with paragraph 4.3 “Bleeding the pump” procedure.

Cause

Aborted cycles, due control unit encountered successive power dips in attempt to initiate pump motor, caused by:

a) Faulty battery (vehicle)

b) Faulty wiring (ground wire)

c) Corroded pin-contact in connector

 

Solution

a) Charge or replace battery.

b) Check wiring. Replace or repair when necessary.

c) Check connections at pump and in cabin. Replace or repair when necessary.

Cause

 The pressure switch did not close during a greasing cycle in primary line-A or -B while control unit noticed a deviant resistance over the pressure switch circuit, caused by:

a) Faulty wiring or connectors.

b) Defective pressure switch.


Solution

a) Check wiring/connectors. Replace or repair when necessary, proceed with paragraph 4.6.5 “Malfunction finding procedures”.

b) Replace pressure switch.

 

Cause

Control unit detected a too low cur- rent draw to pump motor, in combi- nation with initial “no pressure line- A or B” error, caused by:

a) Interrupted wiring.

b) Defective motor.

c) Defective control unit.

 

Solution

a) Check wiring. Replace or repair when necessary.

b) Check motor on wiring faulty, check the resistance of the motor. Replace when necessary.

c) Check control unit. Replace or repair when necessary.


Cause

Control unit detected a too high cur- rent draw to pump motor and aborted the attempted cycle, caused by:

a) Short circuit in wiring of motor.

b) Short circuit in motor.

c) Drive shaft blocked.

d) Extreme low working temperature in combination with a grease not suitable for these conditions.

e) The "pump motor current limit" setting not suitable for the extreme low working temperature.

 

Solution

a) Check the wiring of motor. Replace or repair when necessary.

b) Check motor on wiring faulty, check the resistance of the motor. Replace when necessary.

c) Check the drive shaft on blocking. Replace or repair when necessary.

d) Replace the grease in the reservoir and bleed the system with a suitable grease for the obtained working conditions.

e) Increase the "pump motor current limit" parameter setting but only after checking whether the vehicle wiring and fuse can handle a higher setting.

 


Cause

Control unit detected a too low current draw to first coil of the 5/2-way valve in combination with initial “system on pressure before cycle” error, caused by:

a) Interrupted wiring of the coil.

b) Defective coil.

 

Solution

a) Check wiring. Replace or repair when necessary.

b) Check coil on wiring faulty, check the resistance of the coil. Replace or repair when necessary.   


Cause

Control unit detected a too high cur- rent draw to 5/2-way valve in combi- nation with initial “system on pressure before cycle” error, caused by:

a) Short circuit in wiring of the coil.

b) Defective coil

 

Solution

a) Check wiring. Replace or repair when necessary.

b) Check coil on wiring faulty, check the resistance of the coil. Replace or repair when necessary.



Cause

Control unit detected a too high cur- rent draw to 5/2-way valve in combi- nation with initial “system on pressure before cycle” error, caused by:

a) Short circuit in wiring of the coil.

b) Defective coil

 

Solution

a) Check wiring. Replace or repair when necessary.

b) Check coil on wiring faulty, check the resistance of the coil. Replace or repair when necessary.


Cause

Control unit detected a too high cur- rent draw to 5/2-way valve in combination with initial “system on pressure before cycle” error, caused by:

a) Short circuit in wiring of the coil.

b) Defective coil. 

  

Solution

a) Check wiring. Replace or repair when necessary.

b) Check coil on wiring faulty, check resistance of the coil. Replace or repair when necessary.


Cause

a) No communication between display & control unit.

b) No supply voltage at the pump.

c) Defective Twin-3 display.

  

Solution

a) Check the purple communication wire no. 6 between display and pump (pump connector pin no. 6). Repair when necessary.

b) Check the fuse and red power wire no.1 to pump connector no.

1 and the black ground wire no.

2 to the pump connector no. 2. Replace or repair when necessary.

c) When no issues found as stated in solution A or B, replace display. 


Cause

Control unit encountered corrupted parameters during power up and restored the production default settings.

Solution

Replace control unit.



Cause

Control unit encountered corrupted parameters during power up and restored the production default settings.  

Solution

Replace control unit. 


Cause

Control unit encountered corrupted parameters during power up and restored the production default settings.  

Solution

Replace control unit. 


This error indication shows when pump motor is disconnected due to a number of successive errors but no additional info available on the error cause. Twin pumps manufactured before September 2010 cannot provide such information to the Twin- 3 display.

Cause

Control unit encountered an unknown cause due to:

a) Display connected to a Twin-2 control unit (or a Twin-3 control unit with SW version 1063 or lower). Such a control unit does not supply additional info on the cause of the error like the Twin-3 pump does since SW version 1078

b) An error cause that is not listed in the table.

Solution

a) Replace control unit for one with a SW version 1078 or higher when the additional error information is required.

b) Replace control unit.

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TWIN GENERAL MANUAL



Groneveld Twin General Manual