
SR981S/SR982S operation manual of solar pump station
Page 79 of 85
Blade of electronic flow meter is jammed.
10. Trouble shooting
10.1 Trouble protection
When there is a break or short circuit between the connection of temperature sensors,
controller switches off the corresponding functions and no more output signals are given,
at the same time error sign shows on the screen. If controller does not work correctly,
please check following situations.
►Press “ ” button to check error code (warning sign blinks on the LCD
screen)
LED displayed
error code
Code meaning
Cause of error
Error rectification
T0 - - -
T0 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T1 - - -
T1 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T2 - - -
T2 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T4 - - -
T4 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T5 - - -
T5 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T6 - - -
T6 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
T7 - - -
T7 sensor problem
Sensor wiring
short or open
Check resistance
value or replace
10.2 Trouble checking
The built-in controller is a qualified product, which is conceived for years of continuous
trouble-free operation. If a problem occurs, the most of causes is from the peripheral