Webasto heater blows cold air and air horn not work 09 prostar

Hello any suggestions my Webasto Heater on my 09 Prostar International blows cold air more often than hot air and if I let it run for a while to see what it does a green triangler indicator light starts to flash on the front of the operational knob, also my Air Horn isn't working any assistance would be great.

 

thanx will check and see also i forgot to add this particular unit has 1 operational knob that functions everything it has a green triangle on it that is flashing after a period any idea on what that means i just purchase an manual but it speaks nothing about the Webasto Heater.

Thanx Again
DustinBrock

 

10-4 again for the help

 

Kenan S. any idea on the location of horn?

 

Heavy Load Member
If I was still an ignorant and worldly man I would have probably responded to you in such a manner, that it would anger you and you would probably, invite me to meet you anytime any place anywhere and with my use to be ignorant self I would. Just to prove a point to a 27 year veteran truck driver know it all. But I'm not that same person, so rittle me this 27 year truck driver veteran.

Question:
What are worthless and wicked people like?

Answer:
They are constant liars, signaling there deceit with a wink of the eye,
a nudge of the foot, or the wiggle of fingers.
There perverted hearts plot evil, and they constantly stur up trouble.
But they will be destroyed suddenly, broken in an instant beyond healing.

You just keep on truck 27 year veteran I guarantee GOD will touch the heart of a true GOD fearing person on here and help me get the answers I seek have a BLESSED rest of your life.

Lesson for today from a 5 year veteran to a 27 year veteran HUMBLISISM no one on this planet knows everything. Even you 27 year veteran had to be taught, what good are you on here if you are not trying to help others. Humble yourself and Thank God for all HE has provided you with. I will PRAY for you 27 year veteran.