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14 

 

Fault
Number

Cause

  Description 

F35

ADC fault 

One of the internal checks on the analog to digital converter has 
failed.

Subset : Failure mode

.

F37

RAM test fault 

The main memory in the control has malfunctioned.

x

  Interrupt power to the control. 

x

  This could be due to high levels of electrical interference 

getting into the product. Check all cables are correctly 
screened, and screens are terminated correctly. Ensure the 
mains supply is not excessively noisy. 

x

  If this fault persists, the control must be returned to the 

supplier.

Subset : Failed Page.

F38

Program memory 
CRC fault 

The program memory in the control has been corrupted.

x

  Interrupt power to the control. 

x

  This could be due to high levels of electrical interference 

getting into the product. Check all cables are correctly 
screened, and screens are terminated correctly. Ensure the 
mains supply is not excessively noisy. 

x

  If this fault persists, the control must be returned to the 

supplier.

Subset : Failed Page.

F39

Profile table CRC 
fault

The profile table memory in the control has been corrupted.

x

  Interrupt power to the control. 

x

  Erase the system using option parameter 45.1 = 5 and re 

commission (or restore with option parameter 45.2). 

x

  This could be due to high levels of electrical interference 

getting into the product. Check all cables are correctly 
screened, and screens are terminated correctly. Ensure the 
mains supply is not excessively noisy. 

x

  If this fault persists, the control must be returned to the 

supplier.

Subset : Failed Page. 

Содержание PPC6000 Series

Страница 1: ...__________________________________2 3 Password _______________________________________________________2 4 Adjusting Cut IN and Cut OUT_____________________________________3 5 Manual Modulation _______...

Страница 2: ...value and press the ENTER COM key 3 Password The only password an operator should require is the site Passcode This can be set as a number from 0 999 The factory default number is 154 The site Passcod...

Страница 3: ...alue Meaning 0 No limits The burner will run until another method is used to switch it off 1 Absolute limit The values entered in option parameters 21 6 22 6 and 21 7 22 7 are the actual limit values...

Страница 4: ...own on the display This function can be disabled via option parameter 1 1 To do so requires the suppliers highest passcode 6 Resetting the Control To reset the Nexus the MUTE RESET key will have to be...

Страница 5: ...free to modulate 1 Measured value below warming limit burner held at low fire if the control is in auto or sequencing mode EK18 Boiler status 0 Burner will not fire because the temperature pressure me...

Страница 6: ...essage since power up This should be zero unless there has been a problem EK26 Commission status Current commissioning mode where 0 Normal run mode 1 Adjust ratio mode 2 Commission ratio mode EK27 Com...

Страница 7: ...nearest to the current modulation position EK37 Voltage reference error V The error between the measured voltage reference and the calibrated value 0 12 is the limit The displayed value shows volts NO...

Страница 8: ...ut or trim not selected via serial comms 4 O2 setpoints or flow values incorrect 8 Option 30 6 not 0 16 Not modulating 32 In commission mode 64 Probe faulty see EK45 EK47 Oxygen setpoint Current oxyge...

Страница 9: ...al Output 7 ON Daughterboard PZ15 PZ16 LOW VOLTAGE AND CURRENT ONLY 128 Digital Output 8 ON Daughterboard PZ17 PZ17 LOW VOLTAGE AND CURRENT ONLY EK61 Analog Input 1 Main Unit Terminal PB9 also boiler...

Страница 10: ...task time The current longest internal software task time This is provided for manufacturers diagnostics only and may be removed in future versions EK76 Longest task number The current longest interna...

Страница 11: ...xed by a letter This letter describes the status of the fault F This means that a fault e g PSU calibration fault has occurred and is still present The fault may be internal or external to the unit L...

Страница 12: ...at least four setpoints commissioned x Use commission ratio mode to enter more setpoints Subset fuel code F19 Circuit board voltage reference fault The circuit board has an incorrect on board referen...

Страница 13: ...than five degrees 3 During pre purge ignition or post purge when a drive moves from its setpoint 4 During modulation when a drive is not at its correct setpoint as defined by the commissioned fuel ai...

Страница 14: ...to the control x This could be due to high levels of electrical interference getting into the product Check all cables are correctly screened and screens are terminated correctly Ensure the mains supp...

Страница 15: ...5 and re commission or restore with option parameter 45 2 x This could be due to high levels of electrical interference getting into the product Check all cables are correctly screened and screens are...

Страница 16: ...en level exceeded 15 0 during auto trim commissioning The burner is shutdown Subset Last auto trim commission setpoint 32 if adding air L58 Flue temperature low alarm value exceeded The measured flue...

Страница 17: ...he engineer to ensure the new servo is mechanically fixed the same way as the original one Subset Invalid profile 100 101 to 104 3 The selected profile has been uploaded from a PC but has not been ver...

Страница 18: ...st steam boilers When using only a proportional control the system rarely achieves set point as the burner firing rate is lowered as the pressure comes up At some point the input meets the actual dema...

Страница 19: ...4 for set point 1 PID1 and 22 2 22 3 and 22 4 for set point 2 PID2 These values are adjustable using the Site Passcode 154 11 The Startup Shutdown Stages The startup shutdown stages are as follows Sta...

Страница 20: ...The fuel and air motors are moved down until they are stopped by the closed position micro switches in the servos The final positions are compared with the closed positions stored in memory and must...

Страница 21: ...fuel profile select input is removed PE9 10 11 or 12 the control will immediately move to status 1 10 Ignition The controller confirms all required drives are at their ignition positions and gives an...

Страница 22: ...sing PA9 PA11 this control will move to status 17 If the AUTO input is removed by opening PA10 PA11 this control will modulate down to low fire then jump to status 15 Note Terminal PE7 will not be ene...

Страница 23: ...23...

Страница 24: ...ch is found defective in material or workmanship or which otherwise fails to conform to the description of the product on the face of its sales order THE FOREGOING IS IN LIEU OF ALL OTHER WARRANTIES A...

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