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Checking Thermostat
●Remove the thermostat (see "Disassembling Thermostat") and
check the thermostatic control valve [A] in indoor temperature.
★If the valve is open, a new thermostat is required.
●To measure the valve opening temperature, the thermostat [A] shall
be hung in a container filled with water, and then raise the water
temperature.
○The thermostat must be completely immersed in water and cannot
touch the inside wall or bottom of the container. Suspend an accurate
thermometer [B] in the above container filled with water and ensure
that the immersion depth of the sensing temperature part of
thermometer is substantially the same as that of the sensing
temperature part of thermostat. The thermometer cannot touch the
inside wall or bottom of the container.
★When the temperature reaches 75℃, the thermostatic valve will
open; when the temperature reaches 90℃, the thermostatic valve
will open at least 7 mm
★ If the measurement results exceed the following specified
temperature range, replace the thermostat with a new one.
Thermostat valve opening temperature:
75°~ 90℃
Thermostat opening/closing graph
A Completely closed
B Completely open
Note
A damaged thermostat will cause serious overheating or
supercooling of engine.
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Troubleshooting
