Question 1

Error Symbol ref. 17: Car battery (B1) has run down

Accepted Answer

Possible cause: Car battery voltage goes below 12V. The alarm goes off when the voltage goes above 12.5V.

Question 2

Error Symbol ref. 18, two short beeps: Leisure battery (B2) has run down

Accepted Answer

Possible cause: Leisure battery voltage reaches 10.5V. Alarms go off when the voltage goes above 12.5V.

Question 3

Error Symbol ref. 18, one short beep: Leisure battery (B2) reserve alarm

Accepted Answer

Possible cause: Leisure battery voltage reaches 11.5V. Alarms go off when the voltage goes above 12.5V.

Question 4

Error Symbol ref. 21: Minimum voltage protection device is on

Accepted Answer

Possible cause: Leisure battery reaches the preset threshold, disconnecting 12V users. Users are automatically reconnected with a voltage higher than 13.5V. It is possible to connect all users for one more minute by pressing the on/off button on the control panel. With a voltage lower than 9.5V the control panel automatically turns off.

Question 5

Error Symbol ref. 19, acoustic signal (when engine is off): Fresh water tank is empty

Accepted Answer

Possible cause: Fresh water level goes below 10% of the tank capacity. Alarm automatically turns off when level exceeds 20%.

Question 6

Error Symbol ref. 20 blinking, acoustic signal (when engine is off): Waste water tank is full

Accepted Answer

Possible cause: Waste water level goes over the screw sensor level. To reset alarm press any test button; to exit this function press buttons ref. 2 or 3.

Question 7

Error Red LED lit under the fuse: Broken fuse alarm

Accepted Answer

Possible cause: Fuse is broken. Before replacing the fuse find the problem that determined the system to intervene and in case, have it fixed by relying on expert technicians. Replace with another fuse with the same value.

CBE PL50-ST2

Master Troubleshooting & Diagnostics Matrix

Error Code / Indicator	Symptom / Meaning	Possible Cause	Step-by-Step DIY Fix	Suggested Actions
`Symbol ref. 17`	Car battery (B1) has run down	Car battery voltage goes below 12V	The alarm goes off when the voltage goes above 12.5V.	DIY Safe
`Symbol ref. 18, two short beeps`	Leisure battery (B2) has run down	Leisure battery voltage reaches 10.5V	Alarms go off when the voltage goes above 12.5V.	DIY Safe
`Symbol ref. 18, one short beep`	Leisure battery (B2) reserve alarm	Leisure battery voltage reaches 11.5V	Alarms go off when the voltage goes above 12.5V.	DIY Safe
`Symbol ref. 21`	Minimum voltage protection device is on	Leisure battery reaches the preset threshold, disconnecting 12V users	Users are automatically reconnected with a voltage higher than 13.5V. It is possible to connect all users for one more minute by pressing the on/off button on the control panel. With a voltage lower than 9.5V the control panel automatically turns off.	DIY Safe
`Symbol ref. 19, acoustic signal (when engine is off)`	Fresh water tank is empty	Fresh water level goes below 10% of the tank capacity	Alarm automatically turns off when level exceeds 20%.	DIY Safe
`Symbol ref. 20 blinking, acoustic signal (when engine is off)`	Waste water tank is full	Waste water level goes over the screw sensor level	To reset alarm press any test button; to exit this function press buttons ref. 2 or 3.	DIY Safe
`Red LED lit under the fuse`	Broken fuse alarm	Fuse is broken	Before replacing the fuse find the problem that determined the system to intervene and in case, have it fixed by relying on expert technicians. Replace with another fuse with the same value.	DIY Check / Tech Fallback