12.2021 Caterpillar ECM ECU Flash Files Full Set Download
Possible Cause：
1
The water valve is installed incorrectly or backwards.
a water valve control, inspect the water valve to ensure it is installed correctly.
2. Some water valves have
an arrow on the side of the valve body indicating the direction of water flow. Make sure the arrow points
toward the line leading to the heating coil.
3. If the machine is equipped with a cable-operated water valve,
ensure the cable is not wrapped around the valve or the frame.
4. If the machine is equipped with an
electric water valve, ensure the actuator is securely connected to the valve.
Possible Cause 2
There is an electrical problem with the control panel.
1. Check the control panel to
ensure that power is supplied to the control panel after the machine is started.
2. Check that the wiring
harness is connected to the control panel.
3. Inspect the wiring harness for any damage or exposed wires.
4. Check the circuit breaker or fuse to ensure that there is no open circuit in the system.
