Ac and heater wont work

the company ceased trading in 2010. I can only find the floor plans specs.

https://media.rvusa.com/library/Fleetwood1999_pr_f.pdf

and another make's 5th wheel manual

https://3sir5417bd2eeg8tl187rtox-wpengine.netdna-ssl.com/wp-content/uploads/2012/12/skyline-layton-travel-trailer-fifth-wheel-manual.pdf

If it was online, this should find it.

https://www.google.com/search?q=1998+Fleetwood+Prowler+M-30-5x+manual

..

notify heartland rv https://heartlandrvs.com/?utm_source=google&utm_medium=cpc&utm_campaign=branded&gclid=EAIaIQobChMI9MHhttKT9AIVUeTICh2wfgxHEAAYASAAEgItO_D_BwE AND or rv dealer --rv shop

We do not have this manual.

Bleed your propane system by running the stove for a sec. if that doesn't work go out to the heater and listen for the ignitor clicks see if it's trying to lite. My fifth wheel does this first time every season.

You need to visit a local dealer...any RV dealer. They should provide a general walk through as a courtesy. Pay them for a maintenance inspection and they can provide a detailed explanation of their work. After that you might be able to troubleshoot/repair simple problems yourself.

you have a vacum line lose under the dash for the heater or the switch is dirty

Did you check the fuses in the AC/DC breaker panel? Also, verify the GFI is not tripped.

U can check by blocking off both lines to heater core if still over heats its something else. good luck.