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Carier unit starts then shuts down says apu power apu f/b

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Low freon: When not running the pressure equalizes. When the unit starts the pressure drops on the low side and the low pressure switch turns it off. This protects the compressor when there is not enough freon to carry the oil it needs

Posted on Dec 12, 2014

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: apu fails on heater system

Does heat pumps from 1980"s work without freeon for the heat part?

Posted on Dec 23, 2008

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SOURCE: carier split unit wireing daigram

that would be a pay for answer. Tom

Posted on Jun 21, 2009

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Keypad doesn't work on caterpillar powercube hc-5128 .. need wiring schematic and cannot find one


Hello Gloria Moslander,

My digging around shows that unit is not actually a CAT but a TRIDAKO, 6000 watt, 2 cylinder...
(FRAME MOUNTED AUX POWER UNIT (am I close?)).

Company Details:

5610 Perkins Road
POB 740
Alliance, NE 69301USA Phone: 1-308-762-3235
Toll Free: 1-866-526-7109
http://www.tridako.com

Registration required to get anywhere...

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HC5128 PowerCube APU VehicleServicePros com


PowerCube APU Service

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1 Answer

Thermoking apu starts up then runs for a min then shuts off and shiws a code ac5 .what is this code?


If the unit starts and runs for a short period then The code will refer to either low gas or excessive gas in the system or the thermostat to control the temperature is set to close to ambient temperature. I would go for low gas from a leak in the system

Jun 22, 2014 | Cars & Trucks

1 Answer

Carrier APU wont shut down and showing SP on screen?


Hi there I have seen this a few time's while working on them. The SP stand's for shore power. If you can't get APU to shut down remove the top inspection cover. There is a lever by the fuel solenoid you can push and hold and it will shut the APU down. Do you know if the APU is equipped with shore power? If not I had one do this to me after I power washed it off. If you remove the top cover on the APU on the back wall on the left had side there is a controller. This is called your APU controller. There are to plug's in controller. remove them and check the weather stripping on the plug. I have seen them leak and let moisture in there and it would cause the APU to do funky thing's. If not it's possibly a APU controller. I'd check them few thing's and if you still can't determine a problem get back with me and we can diagnose further.

Sep 21, 2013 | Carrier Air Conditioner Accessories...

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Receiving hardware error 0502 on my A940 printer


Please use this link to fix -

DELL fix for 0502 error code

as DELL have provided detailed instructions on how to fix this one.

Jan 27, 2011 | Dell A940 All-In-One InkJet Printer

3 Answers

Apu starts fine but no fan no heat and no air conditioning and no 120 volt.


Hi there, Would this be a preheat / comfort pro APU? If so I would start with removing the top cover on the APU. There will be a fuse holder with a 20 amp fuse on the back wall on the left side of the APU above the APU controller. Check and see if the fuse is blown. If it's not then the CCU board under the bunk/ bed isn't seeing power. Either 12v harness or the communication harness both from the APU controller to the CCU board are rubbed on the frame, or the CCU board isn't transferring power properly. The CCU board is under the bunk. There are 4 3/4 bolt's that hold the lid on. Start the APU and look at the board you should have green light's light up. these light's are called input light's. Then chose a function on the driver control panel as in heat, a/c, low or high fan and see if they come on. If the driver control pane are showing the function on look down at the CCU board and see if there are orange light's on. these light's would be your output light's. There's a lot of cause's for this problem if you need further help feel free to ask. Thank's

Nov 08, 2010 | Carrier Heating & Cooling

1 Answer

Carier split unit wireing daigram


that would be a pay for answer. Tom

Jun 20, 2009 | Heating & Cooling

1 Answer

Apu fails on heater system


Does heat pumps from 1980"s work without freeon for the heat part?

Dec 23, 2008 | Heating & Cooling

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