Thread Tools Display Modes
Old 11-25-2013, 10:15 AM   #1
Junior Member
Join Date: Mar 2013
Posts: 4
PUP furnace

Hey, my PUP [Flagstaf MAC 228-D] has a furnace in it. I cannot seem to get the heat working. The blower comes on - no heat. Is there a pilot light i'm missing or does this thing have a self-striker to ignite it? Is there a certain temp it has to be at to kick on? My stove works fine so i know i have plenty of propane.

fiveofus is offline   Reply With Quote
Old 11-25-2013, 10:59 AM   #2
Senior Member
Join Date: Nov 2012
Location: X
Posts: 2,781
There's a trouble shooting guide and several other documents for Suburban heaters in the FRF Library. Here's a link to that guide.

You don't say how old your RV is (please consider adding all of that information into your Profile), but it most likely has direct spark ignition (no pilot).

The usual sequence of events is that, when you turn the thermostat on, the blower starts and if the furnace senses enough airflow, it turns on the gas and starts sparking. (You should be able to hear and smell that outside at the heater vent.)

If it doesn't lite, it will try about three times and then lock out. Turn it off at the thermostat to try again.

You may just have air in the gas line so try a few times (assuming you are hearing that spark).

Let us know what you find/hear.

BarryD0706 is offline   Reply With Quote
Old 11-25-2013, 11:05 AM   #3
Senior Member
raspivey's Avatar
Join Date: Jun 2013
Location: Brazoria County, Texas
Posts: 1,460
I had this happen in my last trailer last was just below freezing. I evidently had a little moisture in the gas line. The furnace was the last appliance on the line and just happened to be the lowest point as well. I guess the moisture got pushed to the last bend in the line before it went to the furnace and proceeded to freeze partially blocking the gas line. Everything else worked. When it warmed up, the furnace worked.
2015 Chevy Silverado LTZ - HD tow package
2017 Rockwood 2703WS Emerald Edition
raspivey is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 01:26 PM.