Why does my Thermo King Battery not cycle?
Answer: The most common cause for a unit not to cycle has to do with charging. Check the amp meter in your gauge menu if it is above 5 amps the unit will not shut off. If this is true your battery may be starting to fail.
How to troubleshoot alarm codes on a Thermo King?
Here are my tips for troubleshooting common alarm codes on Thermo King trailer units. This shutdown alarm code can be difficult to troubleshoot. Here are a few common tips to make the process a little easier: Check for broken fan belts. This is the easiest item on the list.
Where is the fuel solenoid on a Thermo King?
The fuel solenoid is located on the back of the injection pump. Turn the unit on and keep a finger on the solenoid. The unit will buzz, indicating a startup. The fuel solenoid will clunk, and the starter will engage. If the solenoid clunks, then it has energized and is okay.
Where is the HPCO switch on a Thermo King?
Check for a defective high-pressure cutout (HPCO) switch. The HPCO is located on the top of the compressor. Disconnect the harness and bypass the HPCO switch. If the unit starts, then the HPCO switch is defective. Check the wiring harness on the 8D circuit. If the unit still won’t start, then verify voltage to the HPCO switch.
Why does my 20 amp fuse keep blowing?
The 20 amp fuse in my 1997 70 hp 2 stroke started to blow ramdomly about 2 weeks ago when i would try to start the motor now it has got to the point that every time i turn the key the fuse goes. Does anyone have any ideas on whats happening?
Why does the fuse keep blowing on my starter?
If the fuse still blows, there is a short in the wire leading from the “S” terminal of the ignition switch to the 3/8″ nut solenoid terminal. If it does not blow, then either the solenoid or the starter is shorted out.
How to troubleshoot alarm codes 10 and 20 on a Thermo King?
Do a voltage drop test to check for an open circuit. You will need a wiring schematic for the Thermo King unit you are working on. Trace the wiring circuit and check any fuses or switches connected to the circuit. This is one of the most common alarm codes you will encounter. Minus a few exceptions, you likely have a fuel system problem.
What happens if you jump start a Thermo King?
Jump the starter and observe the battery voltage. If the starter fails to engage and the voltage falls to 1V or 0V, then you have a bad battery. Replace the battery. Warning: Any attempt to jump start the battery may cause it to explode. Check for a defective high-pressure cutout (HPCO) switch.