Operation manual of solar water controller SR530C8/SR530C8Q
---------------------------------------------------------------------------------------------------------------------------------------------------
- 38 -
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,
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 T0or
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
T3 - - -
T3 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
hot water
circulation pump
function turn-on
T4 not installing
Install T4 or
switch-off this
function
