Yamatake SDC20/21 Error AL01: PV input exceeds +10% of the range (Over-range).

Digital indicating controller · taken from the manufacturer’s manual, pages cited

Alarm codeAL01

PV input exceeds +10% of the range (Over-range). The manual's first action is: “Check the sensor and wiring. Check the PV range.”

Model
Yamatake SDC20/21
Display shows
PV input exceeds +10% of the range (Over-range). (AL01)
Type
Alarm code
Source
Manual p. 73

What AL01 means

PV input exceeds +10% of the range (Over-range). p. 73

Common causes

  • PV input exceeds +10% of the range (Over-range). p. 73

What to do

  1. Check the sensor and wiring. Check the PV range. p. 73

Before you service the product, read the safety instructions in the manual p. 33.

If AL01 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Yamatake service.

Open the manual at page 73 All SDC20/21 error codes Manual details & download

This page summarises what the manufacturer’s manual says about AL01; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Yamatake. Found a mistake? Report an error.