Hi have problem with the EC light always activated on the climate control. Compressor will not engage unless I press EC light button for 20 sec. EC light then goes off and AC works properly. When the car is restarted the EC light is on and compressor is disengaged again until pressed for 20 secs.

Checked refrig pressures and they are OK.

Any help would be greatly appreciated.

Thanks

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Martineau Gauda
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96 C280 Mercedes
82 Rolls Royce Silver Spur