Identifying Help Codes

Updated: Oct 18

Here at First In Finishing, We take pride in our service department. We are eager to release multiple Guides & Tools to help powder coaters maintain production. We specialize in Gema™ Brand products. This is a guide on identifying Help Codes.


Information for Control Units CG02-CG13


For Technical Help, Call Us: 317-439-9019





What Are Help Codes?


Help Codes are Error Diagnostic Codes. Each Gema™ Control Unit from OptiTronic® CG02-CG03

OptiStar® CG06-CG13

All display Error Codes with H##.





Identifying Help/Error Codes on Different Models





Gema™ OptiTronic® CG02 & CG03



On OptiTronic® CG02 & CG03, The Help Code will appear on the bottom right display. Where it says program underneath.






•Here is a list of Error/Help Codes

Help/Error Code

Fault Analysis

H01

Check Systerm Parameter P0 and set P0 = 0 on the basis control without FlowControl

H02

(Only Shows when FlowControl is fitted) Check Systerm Parameter P0 and set P0 = 0 on the basis control

H03

(Only Shows when FlowControl is fitted) Check Systerm Parameter P0 and set P0 = 0 on the basis control

H04

EL 1 Solenoid Valve Error, set System Parameter P5 = 0 for Automatic Equipment. Set P5 = 1 for Demo Equipment

H05

The desired Total Air is too little. Increase the programmed value for Total Air, or make the FL_min of the powder output correction smaller

H06

Main Solenoid Valve Fault. Connection Cable from the main solenoid valve to the basic electronics is missing. (Check the Main Solenoid Valve)

H07

The desired Supplementary Air Volume is too large (ZLmax.) Decrease the programmed value for the Total Air Volume and/or decrease the programmed value for the Powder Output Volume

H08

The desired Conveying Air Volume is too large (FLmax.) Decrease the programmed value for the Total Air Volume and/or decrease the programmed value for the Powder Output Volume

H09

The Daily Correction Value multiplied with the desired value of the Powder Output is greater than 100%. Acknowledge Error & decrease the Daily Correction Value via the PLC

H10

Gun Cascade produces too High Voltage. Check base electronics and Gun

H11

Check System Parameter P1 (Gun Type) Check Gun Cable for breaks, Replace Gun

H19

EL 2 Solenoid Valve Error (Not Used)

H20

Check the 24 V DC Internal Power Supply. The 24 V DC voltage is Higher than normal Voltage. (24 V DC-10%)

H21

Check the 24 V DC Internal Power Supply. The 24 V DC voltage is Lower than normal Voltage. (24 V DC-10%)

H22

Fault in the 15 V DC Power Supply to the basic electronics

H23

EEPROM Fault

H24

EEPROM writes Timeout



Gema™ OptiStar® CG06 & CG07




On OptiStar® CG06 & CG07, The Help Code will appear on the bottom Left display. Right above the +, -, & P Button


•The Error Codes are displayed in order of occurrence. Use the + & - Buttons to cycle through them


•Only the last 4 Errors will be stored. An Error will not store twice.


•It is possible an error will appear briefly then disappear. If this happens, Switch off Control Unit then power back on


•Here is a list of Error/Help Codes


Error/Help Code

Fault Analysis

H06

Trigger Value (Main Solenoid Valve) Solenoid Current is lower than present limiting value

H07

Supplementary Air Volume is too High (Total Air Setting on Display)

H08

Conveying Air Volume is too High (Powder % Setting on Display)

H09

Powder Output Higher than 100%

H10

Conveying Air Range lower than minimum range

H11

Gun Error, Check Gun & Gun Cable)

H20

Overvoltage +15V Supply

H21

Undervoltage +15V Supply

H22

Undervoltage -15V Supply

H23

Undervoltage +5V Supply

H24

EEPROM Content Invalid

H25

Timeout during EEPROM Writing

H26

Values not correctly storing in EEPROM during Switch Off

H60

Conveying Air Reference Position not found

H61

Supplementary Air Reference Position not found

H62

Electrode Rinsing Air Reference Position not found

H63

Shaping Air / Fluidizing Air Reference Position not found

H64

Conveying Air Throttle doesn't move

H65

Supplementary Air Throttle doesn't move

H66

Electrode Rinsing Air Throttle doesn't move

H67

Shaping Air / Fluidizing Air Throttle doesn't move

H68

Conveying Air Position Lost

H69

Supplementary Air Position Lost

H70

Electrode Rinsing Air Position Lost

H71

Shaping Air / Fluidizing Air Position Lost


Gema™ OptiStar® CG09 & CG13


On OptiStar® CG09 & CG013, The Help Code will appear on the bottom display. Right between the Power Button & <P>


•The Error Codes are displayed in order of occurrence. Use the <P> Arrow Buttons to cycle through them


•Only the last 4 Errors will be stored. An Error will not store twice.



•It is possible an error will appear briefly then disappear. If this happens, Switch off Control Unit then power back on


•Here is a list of Error/Help Codes


Error/Help Code

Fault Analysis

H05

Purge Valve not connector or Purge Valve is defective

H06

Trigger Value (Main Solenoid Valve) Solenoid Current is lower than present limiting value

H07

Supplementary Air Volume is too High (Total Air Setting on Display)

H08

Conveying Air Volume is too High (Powder % Setting on Display)

H09

Powder Output Higher than 100%

H10

Conveying Air Range lower than minimum range

H11

Gun Error, Check Gun & Gun Cable)

H13

Intermediate Circuit Voltage too High

H14

Offset Spray Current Measurement

H21

Power Supply Undervoltage

H24

EEPROM content invalid

H25

Timeout during EEPOM Writing

H26

Values not correctly stored in EEPOM during Switch Off

H27

EPPROM Verification Failed

H60

Conveying Air Reference Position not found