HVAC questions
Thread Starter
Racer
Joined: Mar 2021
Posts: 413
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From: UAE
HVAC questions
As it seems that noone from Tech is reading General forum, duplicating it here:
PS: Original tread is here
1. Sometimes HVAC control and Audio Head (Joying with PAC ROEM-VET1, powered from ignition) are not powering up with start of vehicle. At same time Traction-off bulb and message going on.
Switching ignition on and off helps. Suspecting ignition itself (in any case this one looks dying). So, question 1: Can it be anything else, like some central consol wire (like shifter bulb) having shortage ?
2. Bulbs on HVAC buttons of internal / external circulation are not steadily on / off, but blinking from normal to almost no light and back. This is not related to vibration. Also, once, cold air stopped coming from left side while passenger side was ok. Changing mode through the cycle back to same helped, but temperature of driver side air changed very slowly - it took few minutes to get it back cold. So, question #2. Is it Actuator or HVAC control unit or both ?
HVAC is automated, 2 zone. No errors in scanner.
Switching ignition on and off helps. Suspecting ignition itself (in any case this one looks dying). So, question 1: Can it be anything else, like some central consol wire (like shifter bulb) having shortage ?
2. Bulbs on HVAC buttons of internal / external circulation are not steadily on / off, but blinking from normal to almost no light and back. This is not related to vibration. Also, once, cold air stopped coming from left side while passenger side was ok. Changing mode through the cycle back to same helped, but temperature of driver side air changed very slowly - it took few minutes to get it back cold. So, question #2. Is it Actuator or HVAC control unit or both ?
HVAC is automated, 2 zone. No errors in scanner.
