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Old 07-20-2018, 08:49 AM   #1
Supertommy68
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Join Date: Apr 2018
Location: Molalla
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Another Garage AC Post

I have a 2018 Raptor 398TS. The rear AC does not work. I didn't do a very thorough PDI (obviously). I have a single 3-zone T-stat and believe it is on Zone 3, which shows system in cooling mode, but nothing at all in the garage. I haven't opened up the unit yet but am wondering if there is an easy or usual suspect? Many Thanks
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Old 07-20-2018, 10:14 AM   #2
K_N_L
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Location: Lanexa
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2 things - are your zones 1 and 2 both running while you try to get zone 3 running ?
if so try turning zone 2 to off / wait about 30 seconds and see if zone 3 starts - you may have a load sharing device. Mine was connected to ac #2 but it may be on AC #1



To verify you can check the number of 20amp circuit breakers marked A/C in the power distribution box. if you have only have 2 you likely have a load sharing relay that switches power between 2 of them with the garage being shut off.
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Old 07-27-2018, 01:21 PM   #3
DonnieBlitz
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Yup that was our thing too. If you have zone 1 and 2 going zone 3 will not run. Most of the Techs at our dealer didn't even know that.
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