2014pinnacle Posted December 22, 2022 Share Posted December 22, 2022 Hi guys I have a 2016 pinnacle recently my heater fan has stopped working ing I checkEd all the fuses and replaced the 2 hvac relays I don’t have any speeds on the front blower motor and I have noticed the bunk heater controls don’t work either what else should I be looking at? Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/ Share on other sites More sharing options...
Joey Mack Posted December 22, 2022 Share Posted December 22, 2022 the ground wire... All the grounds are GRAY.. Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518799 Share on other sites More sharing options...
Mackpro Posted December 22, 2022 Share Posted December 22, 2022 The cab blower motors are a known issue to go out . The HVAC control pane on the dash is another problem area. Mainly due to people not changing their cabin air filter. A clogged/dirty filter causes the motor to over heat and also melts the back of the HVAC panel. Also melts the dash harness connector. Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518842 Share on other sites More sharing options...
2014pinnacle Posted December 23, 2022 Author Share Posted December 23, 2022 And this will cause the bunk heater not to work as well? Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518883 Share on other sites More sharing options...
Mackpro Posted December 23, 2022 Share Posted December 23, 2022 12 minutes ago, 2014pinnacle said: And this will cause the bunk heater not to work as well? No. Different circuits I believe. The newer sleeper trucks a a bunk fan switch also on the dash . Make sure it’s on Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518885 Share on other sites More sharing options...
Mackpro Posted December 23, 2022 Share Posted December 23, 2022 Also , there is a fuse box for the sleeper it’s self. Should be under the bed somewhere. Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518887 Share on other sites More sharing options...
Joey Mack Posted December 23, 2022 Share Posted December 23, 2022 (edited) Check circuit breaker #70, it is Bunk HVAC,. #72 is also an HVAC circuit breaker,, fuse 25 is the cab HVAC.. these are in the top panel.. Edited December 23, 2022 by Joey Mack Pore cell fone sperring Quote Link to comment https://www.bigmacktrucks.com/topic/70902-heater-problems/#findComment-518900 Share on other sites More sharing options...
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