Solar working station operation manual SR881
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6. Trouble shooting
6.1 Trouble protection
a
.
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 signals are showed on the display.
If controller does not work correctly, please check following points.
►Press “+”“-” button to check error code, “ “signal displays on the LCD screen
Error message on
LCD screen
Meaning
Cause of error
Error rectification
T0 - - -
T0 sensor problem
Sensor wiring interrupted, not
connected or short circuit
Check
resistance
value, replace
Thermal measuring
function
is
switched-on
T0 sensor not connected
Connect
T0
or
switch-off
this
function
（
OHQM
）
T1 - - -
T1 sensor problem
Sensor wiring interrupted, not
connected or short circuit
Check
resistance
value, replace
T2 - - -
T2 sensor problem
Sensor wiring interrupted, not
connected or short circuit
Check
resistance
value, replace
T4 - - -
T4 sensor problem
Sensor wiring interrupted, not
connected or short circuit
Check
resistance
value, replace
6.2 Trouble checking
The controller is quality product, conceived for years of continuous trouble-free operation. If
a problem occurs, the cause of the problem very often lies not in the controller but in the
peripheral components. The following description of some well-known problems should help
the installer and operator to isolate the problem, so that the system can be place back into
operation as quickly as possible and to avoid unnecessary costs. Of course, not all possible
problems can be listed here. However, most of the normal problems encountered with the
controller can be found in the list below, only return the controller to seller when you are
absolutely sure that none of the problems listed below is responsible for the fault.
