Close
The driver climate zone only blows hot
1999 Buick Century

The driver climate zone only blows hot

(1999 Buick Century)
Climate controller has dual zones...the pass zones still works fine with AC and heat...the driver zone will only deliver heat regaradless of how the controls are set...also the fan speed does not work on high so I am think I need to replace the climate control panel...
1 answer & 0 comments
Popular Answer
on May 22, 2017
Hello,
It sounds like these issues may both be attributable to the climate control unit (panel), but they may be individual issues as well.
If the climate control panel is not sending the signal to the blower motor resistor to run the fan on high, the panel is the issue. However, if the blower motor resistor is receiving the signal to run the fan on high, it is likely faulty.
Now, the climate control system uses blend doors to change how much air and what temperature air should blow out of the vents.
Same as the blower motor resistor. If the actuator is getting the signal, but does not move the blend door, the actuator or blend door is faulty/broken. If the actuator is not receiving a signal, the climate control unit should be tested, and is likely faulty.
You can test these yourself by locating these components on the HVAC central housing, located behind and underneath the dashboard.
Sign in to reply
General Diagnosis
$88 - $111 Learn More
on May 22, 2017
Hello,
It sounds like these issues may both be attributable to the climate control unit (panel), but they may be individual issues as well.
If the climate control panel is not sending the signal to the blower motor resistor to run the fan on high, the panel is the issue. However, if the blower motor resistor is receiving the signal to run the fan on high, it is likely faulty.
Now, the climate control system uses blend doors to change how much air and what temperature air should blow out of the vents.
Same as the blower motor resistor. If the actuator is getting the signal, but does not move the blend door, the actuator or blend door is faulty/broken. If the actuator is not receiving a signal, the climate control unit should be tested, and is likely faulty.
You can test these yourself by locating these components on the HVAC central housing, located behind and underneath the dashboard.
Sign in to reply

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
I have a ticking noise from the rear hatch. my passenger side a/c blows colder air but the driver side blows lukewarm...
Heater core is hot .blows warm out the drivers side vent and cold out the others . doesn't matter it is set to...