PT-42 Front Heaters

[Pete Masterson]

Sitting here in dreary, rainy, 40 degree cold Texas, I had some time
to poke around the dash board area today.

I discovered the alarm switch (turning it on set off a buzzer in the
driver's area, but no external alarm). Of course, I don't have the
Key fobs -- Later I'll look for the number as someone suggested so I
can order a new one.

I found the AquaHot heat exchanger -- of the 3 floor-level vents,
it's behind the one closest to the driver just below the 2-door
shallow cabinet. There was a board on top of it that I didn't remove
-- but I expect that the fans are not working on it since no heat
comes out. The vent opening to the right (center of the three) seems
simply to allow air to enter the dash area, and the far right vent
has a flexible AC distribution tube attached to it. I think it may be
an air intake of some sort. All the AC/chassis heat outlets (with the
adjustable vanes) have flexible tubing attached. There's quite a
tangle of tubing in the under-dash area, but conditions here didn't
permit me to make an extensive exploration. Since I also have a non-
working fan on one of the 2 AH heat exchangers under the galley
cabinets, I'll need to get at least one replacement fan.

I also found that the internal 'door' that controls the flow of heat/
AC through the chassis system is accessible through the access panel
with the passenger's foot rest on it. (In automobiles, this part of
the heat/cooling system is almost always nearly impossible to
access.) The plenum unit seems to have 3 air pressure (or vacuum
pressure) devices attached to the outside. One has a lever
arrangement that's exposed -- and some wires (going to the switches
above the foot rest) were tangled around it. That may have been why
the switchover to AC from chassis heat hasn't resulted in the
expected airflow through the 'eyeball' vent as in the past. (We'll
see when it's a bit warmer.)

I found the alarm system mic "bullet hole" in the mirror above the
bedroom closet doors -- but I haven't identified any more mic
locations elsewhere in the coach, so far. I find the spot for the LED
below the keypad -- but it's a empty hole. Perhaps the LED has fallen
inside somehow. (Finding access to the back side of that area looks
like it might prove "interesting" as a carpet covered board is on the
inside wall next to the passenger seat.)

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road at Lockhart, TX



On Nov 24, 2007, at 6:40 PM, Tom McCarthy wrote:

> Kurt,
>
> The PT42 in 1995 should have an alarm system. Do you have little
> black devices under the upper cabinets in the dining/kitchen area.
> They should be glass break mics. They might also be in the bedroom.
> Other devices look like they are mounted in the walls high in the
> room. These "bullet holes" might also be part of teh alarms system.
> Just guessing as I cannot fathom any other use.
>
> I have never tried mine out. I have key fob remotes but typically
> use the keypad since I do not carry the keys in my pocket to use the
> remote. I was told tha the alarm switch is under the CB radio
> cabinet area next where you went in to find the AquaHot heating unit.
>
> It would be nice to figure the alarm out as I have felt I should use
> it when leaving the coach in some instances.
>
> Glad you got that heater to work. It is really nice when sitting up
> front.