Question about Heating & Cooling

Hw do i remove error code E4

Because its right cold and nice but latter it show tht error code.whi Le is cold

1 Answer

Richard Slade

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21 Answers

Hi,
E4: Indicates lack of refrigerant, or the compressor is not running, or the thermistor is out of
calibration.
Action: Check that the compressor is running by listening.
If it is apparent that the compressor is running, then check the
temperature difference across the evaporator.
i.e. Measure temperature of return air at inlet filters and
measure temp. of discharge air at grilles. This temp diff.
should be 14 to 18 C. with fan on hi speed. If temp diff. is less than this,
suspect lack of refrigerant.
Fit a suction gauge to access valve at rear of unit. See fig 12. On a 35C
outside temp. then suction should be 380 to 450Kpa.

Good luck

Posted on Feb 15, 2015

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