Tip & How-To about Honeywell HZ-709 Oil Filled Radiator Heater

Easy fix for the turn off on the HZ-709 oilded radiator

Problem: firs let's identify the problem, there is a sensor on the inside panel, made originally for safety if you tipped the heater off, it kill the power causing it to turn off...after a year of so that sensor get a little rusty/dirty causing it not to work correctly...

let's find out how to fix that annoying turn off..

tool needed, a phillip screw driver.. electrical tape or soldering unit..

fixing it: take out the top and bottom screws, to open the panel. after you open the panel you'll see a metal bar screwed to the front controller...take all 6 screws out...the front panel comes off....then there is about 4 screws holding an inner box, open that up..
inside there, you;ll see lots of wires...look for 2 small blue wire running together to a black sensor that make noise everytime you move it....

disabling the sensor
------------------------------
2 ways you can do this..

-you can cut the wire off using a scissor, and connect the blue wires together, use the tape to tape them.
or

- you can solder them together on the back of sensor panel...


there you go problem solved...

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1 Answer

how do I bypass the tip over safety switch on my mr heater propane heater . I only use it for golfing in a golf acrt and no inside use.But it keep s going off when it s moved or bumped


I had the same peoblem you 1.remove the 6 screws 3 on eacb side 2.remove back panel 3.remove the tip over switch attached to bottem right looks like a black plugin4.hook the 2 wires that was connecting saftey swith togetber and tape them together with electrical tape (making sure they are touching obviously)5. Reassamble and your good to go no more constant relighting

Jan 07, 2012 | Mr. Heater Mr Heater Portable Buddy...

1 Answer

My son has a Goodman GMNT furnace in his cabin. Last spring the furnace would try to start and quit. We would turn the thermostat up and restart it a couple more times before it would keep working. Now, nothing works. We can't even get the furnace fan to turn on manually. Thermostat problem, curcuit board problem or where do we start looking? Thank you.


Hi, on the board you will have a 3 to 5 amp fuse, plug in type just like your auto fuses. It probably blew it which shuts power down on the furnace. It kill power to the thermostat also. If the furnace would try and start and shut back off, you will have what is called a flame sensor that runs along side of the pilot. It is white porcelein, round about about 5" long with a metal tip coming out the end. The other end plugs on the board. The metal tip is in the pilot flame and when they get dirty they will shut the unit off very fast. You can use steel wool to clean the tip or real fine grade sanding cloth. After cleaning this flame sensor it continues to cycle on and off, you should have a led light on the board that will flash. It may have a number of flashes, for instance 4 flashes long and 2 short ones what ever the amount. On the inside of the panel, you will have a code chart and it will point you to the problem according to how many times it flashes. They almost trouble-shoot them selves. If you remove the panel, most have a kill switch on them for safety. So, when you take it off and you have no power to anything and the fuse is good, this door panel switch is around the perimeter that opens the contacts just like your home refrigerator does for the light but works backward the that. Tape it down and it will restore power so you can leave the panel off when checking this out. This will be a easy fix for you. Please keep me posted and be kind when rating me as I know you will. Let me know the outcome as I keep all of your information on hand.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor
PS Be sure to remove tape if you have a switch and make sure the panel is installed right so it closes the switch. Best to you.

Jul 31, 2010 | Goodman GMS90703BXA Heater

2 Answers

Pilot light can light and stay lit if I hold it


You have a possibility of two problems;
First:You need to check the pilot, when you areholding the pilot knob in, is the pilot flame covering the top of the thermocouple-the metal rod that is near the pilot, it will have a copper tube or maybe 2 wires, running back to the main gas valve. If the flame is covering the top 1/8" of the rod, it is ok. (For Now)
If the above checks out ok, now we move to the "Tip Sensor", this sensor is usually bebind the screen near the pilot knob. It has two wires running to it, the sensor is about the size of a dallor coin, inside this sensor is a metal ball, that makes contact with the two contacts inside the sensor, while the heater is standing upright, if the heater tips over, the ball moves and breaks the contacts in the sensor, shutting off the heater. This is a safety switch in case the heater tips over, sometimes the contacts in the sensor get dirty, try tapping the switch, basicly getting the ball to move around,then try it.
The final step - "Trouble Shooting purpose only", take the two wires coming to the sensor, cut them about 2" away from the sensor, and twist them together, then try it, if it works, the sensor is bad, take the sensor out, and shake it for awhile, then put it back in, rewire it to original wiring, if it still doesn't work, you will have to replace the sensor, contact the manufacture.
Please rate me, if this has been helpful, it keeps us keep on trying to help, LOL.
Contact me back if you have anymore questions.
Sincerely,
Paul Gibson

May 15, 2010 | Endless Summer 2300 Open Flame Patio...

1 Answer

Honeywell HZ-709 Oil Filled Radiator


Problem: firs let's identify the problem, there is a sensor on the inside panel, made originally for safety if you tipped the heater off, it kill the power causing it to turn off...after a year of so that sensor get a little rusty/dirty causing it not to work correctly...

let's find out how to fix that annoying turn off..

tool needed, a phillip screw driver.. electrical tape or soldering unit..

fixing it: take out the top and bottom screws, to open the panel. after you open the panel you'll see a metal bar screwed to the front controller...take all 6 screws out...the front panel comes off....then there is about 4 screws holding an inner box, open that up..
inside there, you;ll see lots of wires...look for 2 small blue wire running together to a black sensor that make noise everytime you move it....

disabling the sensor
------------------------------
2 ways you can do this..

-you can cut the wire off using a scissor, and connect the blue wires together, use the tape to tape them.
or

- you can solder them together on the back of sensor panel...


there you go problem solved...

Nov 07, 2007 | Honeywell HZ-709 Oil Filled Radiator...

5 Answers

won't stay on


mso 9]> Normal 0 mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> Warning this will disable the tip over sensor, Unit will not automatically turn off when knocked over!!

I had the same problem with the "F" appearing and the unit turning off. I read a similar post about the hz-709, that talks of removing the "tip over sensor". To remove the sensor, "two little black boxes on one chip, that rattles like there is a ball bearing in each box."
Remove two small screws on the bottom of the heater then remove two small screws on the top of the heater "top screws are under a small cap that can be popped of with a flat head screwdriver."
Inside long panel front Unplug three wires, White Brown Blue "remember where they where plugged in, so you can plug then back in later."
Inside long panel front there is a silver panel with eight screws on it only the, only the four "corner" screws have to be removed to remove silver panel.
remove silver panel then remove remaining 4 screws, Now remove front control from long panel front, there are 6 screws only have to remove the four inner screws, Open white box, slip large chip off three prongs,
there are two small blue wires connecting to the two small black boxes from the beginning of this post, cut wire from box, twist or solder together, and tape with electrical tape.
"You have just removed/disable the tip over sensor, Unit will not turn off when knocked over!!"
Reverse steps reassemble the unit and enjoy.

Feb 04, 2007 | Honeywell HZ-710 Oil Filled Radiator...

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