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Low freon: When not running the pressure equalizes. When the unit starts the pressure drops on the low side and the low pressure switch turns it off. This protects the compressor when there is not enough freon to carry the oil it needs
If the unit starts and runs for a short period then The code will refer to either low gas or excessive gas in the system or the thermostat to control the temperature is set to close to ambient temperature. I would go for low gas from a leak in the system
Hello Ron, It sounds to me as if either the defrost thermostat is weak and cutting the hearter off before all frsot is melted OR the defrost timer is running too fast and not giving sufficent time for frost to properly melt. The usually total time the refrig will spend in the defrost mode is 25-30 minutes,that is the time from when it starts defrost mode,until the time it goes back to cooling mode,typically all the frost will melt within 15 minutes, but it still stays in deforst mode if the heater is on or off until the 25-30 minutes has elapsed. Now if you have a older (late 1980's to mid1990's) General Electric the problem is more severe and the compressor is bad, but only ge brand during those times.
a heater uses the temperature of the cars water, running threw a heat exchanger if the heater core has failed water will not circulate threw the engine properly this will and can cause over heating as well as nothing blowing from the heater. good luck.heater cores are generally inexpensive parts to replace.
last thing you can check if heater core is ok. is the thermostat.
Drain the engine coolant into a suitable container.
When draining engine coolant, keep in mind that cats and dogs are
attracted to ethylene glycol antifreeze and could drink any that is
left in an uncovered container or in puddles on the ground. This will
prove fatal in sufficient quantity. Always drain coolant into a
sealable container. Coolant should be reused unless it is contaminated
or is several years old.
Disconnect the heater hoses. Be careful not to damage the core by
pulling on the hose to remove. Cut the hoses if they will not come off
Remove the instrument panel.
Disconnect the resistor assembly.
If possible, disconnect and move the duct (non air conditioning)
or the evaporator housing (air conditioning) to the right to gain
clearance for the heater unit. If equipped with air conditioning, do
not disconnect air conditioning system until absolutely necessary.
for discharging, evacuating and recharging the system.
Remove the instrument panel stay and heater unit.
Disassemble the heater unit by removing the duct, mode control case, core assembly and heater core.
Assemble the heater unit by installing the duct, mode control case, core assembly and heater core.
Install the heater unit and instrument panel stay.
Connect the duct (non air conditioning) or the evaporator housing
(air conditioning) to the heater unit. Evacuate and recharge the air
conditioning system if the system was discharged to remove the
Connect the resistor assembly.
Install the instrument panel as outlined in this section.
Connect the heater hoses. Be careful not to damage the core by pulling on the hose.
Refill the engine coolant into a suitable container.
Connect the negative (-) battery cable and check for leaks.
I just had my pump replaced for $66 and the repairman said this unit is notorious for this problem. He had 6 other units in his shop when we came in. Make sure you keep your clean water tank FULL, as he said the pump fails as soon as it runs dry.