Question about Sanyo 18KS52 Air Conditioner

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Help with split sysytem

My split system wont heat properly. it seems to blow out hot air until it reaches 19 degrees celcius and then it switches to standby or blows cool air. i have tried changing the batteries and moving the remote. it doesn't seem to matter if we use the automatic function or the specific heating function. i have also tried adjusting the fan control. let me know if you have a solution. regards amanda

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I do not suspect the remote, I think it is the return air sensor on the evaporator coil. If you can remove the plastic cover that encloses the coil do so and vacuum the coil and any sensors you may see. I suspect that a technician will have to perform a resistance test on the sensor.

Posted on Aug 30, 2007

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Posted on Jan 02, 2017

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Have exact same air conditioner as I recognise the remote control.
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1 Answer

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Your statement in it-selves solve the problem.
Your vehicle cooling system and air-conditioner system work independently.
Your vehicle cooling system is driven by the v-belt that turns the water-pump and circulates the coolant within the engine through the radiator and back into the engine and flow is controlled by a thermostat.

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It seems that you need to repair the engine cooling system which has a fault and this fault could be
a) combustion seeping into cooling system (blown gasket),
b) cooling fan not operating (this fan engages at specific engine temperatures and suck cold air through the radiator in order to cool the engine coolant as it passes through radiator veins),
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d) engine combustion could be too hot due to fuel mixture discrepancies (too lean) thus overheating the internal combustion process which will overheat coolant,
e) engine cooling system leak causing the system not to seal thus restricting the pressurised coolant circulatory system (the system needs to be pressurised for effective circulation as well as raising the boiling point of coolant (under pressure water would boil at 110 degrees Celcius instead of 90 degrees Celcius).

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1 Answer

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2000 nissan altima blows cold until outside temp reaches 90 degrees then blows hot


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1 Answer

No heat air is blowing cold


First you have to identify what causes the problem.
To do this you have to:
1) When engine is cold check the level of coolant. If it is low fill it up.
2) Start engine and check if engine reaches regular temperature. If your engine is not heated enough it means your thermostat does not work properly and should be replaced.
3) If engine temperature is normal, then check the temperature of pipes that go to/from heater core. These pipes are located up the fire wall (easier access is from the passenger side). If pipe/pipes are cold (even engine is worm) it means you heater core is plugged and should be flushed. Keep in mind, flushing the whole cooling system is different from flushing heater core.
4) If pipe/pipes are hot/warm, turn off the fan, switch controller to the hot position, wait for 3-4 minutes and turn on the fan. Note if the cold air blows first or warm air blows first but it cools down in 5-10 seconds. If the air blows cold than it is most probably the problem with blend door or blend door actuator.
5) If air blows warm first and then cools down, then while running engine and remaining the transmission in PARKING position, press on the gas pedal until your engine reaches 3,000 RPM. Check if your heater blows warm/hot air. If it does, then your water pump does not work properly and should be replaced. If the air still cold, I would suggest to flush the heater core.

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1 Answer

Heater not working


First you have to identify what causes the problem.
To do this you have to:
1) When engine is cold check the level of coolant. If it is low fill it up.
2) Start engine and check if engine reaches regular temperature. If your engine is not heated enough it means your thermostat does not work properly and should be replaced.
3) If engine temperature is normal, then check the temperature of pipes that go to/from heater core. These pipes are located up the fire wall (easier access is from the passenger side). If pipe/pipes are cold (even engine is warm) it means you heater core is plugged and should be flushed. Keep in mind, flushing the whole cooling system is different from flushing heater core.
4) If pipe/pipes are hot/warm, turn off the fan, switch controller to the hot position, wait for 3-4 minutes and turn on the fan. Note if the cold air blows first or warm air blows first but it cools down in 5-10 seconds. If the air blows cold than it is most probably the problem with blend door or blend door actuator.
5) If air blows warm first and then cools down, then while running engine and remaining the transmission in PARKING position, press on the gas pedal until your engine reaches 3,000 RPM. Check if your heater blows warm/hot air. If it does, then your water pump does not work properly and should be replaced. If the air still cold, I would suggest flushing the heater core.

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