Robinair AC machine - 'Initialising System' stopped!

[WinWoj]

Hi Everyone,

I have AC machine Robinair Cool Tech, with big lcd for US,
and macine doesn't start, LCD shows logo,
'Initialising system' and not work... Also after many hours
nothing change.

Anybody knows which circuits are checked, in which steps
or what can be damage in mainboard - some guys offer
repair mainboards, but after they saw my mainboard,
said is differet type, as his.. So can't repair.

There are 2 big Z80 mcu, 2 flash 29x010 or similar,
but I think system can't finish initialising, because
some test not pass. So I will decide to check it,
maybe some of You, m8s, do this and can help me,
please give some solutions. I found some electrical tips,
(I think not usefull in this case), like below:

You can try the following :
1# Check main 15 amp circuit breaker (located on back of the machine), reset the circuit breaker. If breaker tripped again after reset, the circuit breaker need to be replace.


2# Verify line voltage is present at input of main power switch & output at switch turn ON. If line voltage is not present at power switch input, check connections between power switch and AC plug. If line voltage is present at power switch input, but not at output with power switch turned ON, replace power switch.


3# If all proceeding steps tested OK & problem still exist, you may nee to replace The main control module.
Hope this will help you, if so please vote for it.

and another:

1
Inspect the power cord for wear or damage if the unit functions intermittently or not at all. A worn or damaged power cord can pose an electrical fire risk and may impede machine performance. Contact the manufacturer for a replacement power cord.
2
Replace the filter-drier if the unit becomes increasingly ineffective at removing moisture and contaminants from an automobile's refrigerant. The manufacturer recommends changing the filter-drier every 150 lbs. of recycled refrigerant. Locate the control panel on the front of the machine. Press the "Menu" button. Press the up or down arrow to scroll through the menu and select "Change Filter." Press the "Start/Yes" button. The machine will begin to clear the filter. Once the clearing process is finished, the panel will display "Turn Unit Off and Replace Filter." Turn off the unit and unplug it from the power source. Open the unit service panel, located on its side, and remove the old filter. Replace with a new filter. The manufacturer recommends using a Robinair filter (order Robinair #34724) to optimize continued performance.
3
Change the vacuum-pump oil if the unit suction power decreases. An oil deficiency can impede vacuum performance. The manufacturer recommends changing the oil after every 10 hours of operation. Press the "Menu" button. Press the up or down arrow button to select "Change Vacuum Pump Oil," then press the "Start/Yes" button to commence. The vacuum pump will process for about two minutes, emitting an audible noise. When the pump is finished processing, the noise will cease. Open the unit service panel, located on its side, and remove the plastic plug on the oil port of the pump. Remove the oil drain cap and allow the pump to drain into a disposable container. After the oil has finished draining, screw the oil drain cap back into place. Pour 6 ounces of vacuum-pump oil into the fill port. Press the "Start/Yes" button. As the pump is processing, slowly add more oil until the level rises to the middle of the reservoir. Press the "Stop/No" button. Reattach the plastic plug on the fill port.

Read more: How to Troubleshoot a Robinair 34700Z | eHow
How to Troubleshoot Robinair

Designed to remove moisture and air from your air conditioning system, vacuum pumps also help prevent metal corrosion and keep moisture from freezing up. Your Robinair vacuum pump lowers the A/C system's pressure, vaporizes the pressure and then dissipates it into the air. If something goes wrong with your pump, troubleshooting will help you get your Robinair pump up and running faster than waiting for service.

Instructions

1. Poor Vacuum Performance

1 Make certain you have clean pump oil and that it's at the correct level if your Robinair pump does not have a good vacuum. First let the pump run for a minute to warm up the oil.
2 Remove the oil drain cap underneath your pump, drain the oil into a container legal for disposal, then tilt the pump forward so you can drain out the remaining oil. Use original motor oil containers, water jugs or milk jugs to drain the oil into as long as the container did not contain chemicals such as gasoline, cleaners, bleach or paint. Secure the lid firmly and write "Used Motor Oil" on the container for recycling.
3 Put the oil drain cap back on, remove the oil fill cap next to the red handle and fill the reservoir with fresh pump oil until you can see the oil at the bottom of the sight glass.
4 Locate the sight glass on the side of your pump beneath the red exhaust fitting. Turn on the pump. After running the pump for one minute, check the oil level. If you see the oil level below the oil level line on the sight glass, while you have the pump running, pour in oil slowly until you see the oil at the oil level line.
5 Use only Robinair's Premium High Vacuum Pump Oil or another high vacuum pump oil. Replace the oil fill cap and ensure you have the oil drain cap tightened securely.

2. Pump Will Not Start/ Leaking Oil
6 Check the line voltage if your Robinair pump will not start. The voltage at the electrical outlet should match the voltage on your pump motor decal, such as 115 volts and 60 hertz, for instance. Your pump's motor should start at plus or minus 10 percent of the line voltage at 41 degrees F.
7 Make certain you use an 18-AWG cord if you use an extension cord that measures under 25 feet. Using an undersized extension cord can cause a drop in line voltage, as well as overheating and power loss.
8 Reseal the oil drain plug if you see oil leaking around the plug area, using a commercial pipe thread sealer.

[Meat-Head]

Cool or could be checking the pressure switches before powering up.

[marmaro]

Hi! look here
RA19427 Robinair High Pressure Switch

[Meat-Head]

Cool post, so put a fuse in place of that switch, if it powers up, your going to have fun!

You could for "safety" if linking switch out works, unbolt the cyckinders of gas, then tell it to 'charge' ( to atmosphere).

choice, blow your hand, leg, arm, blind, deaf, damage cars, or think, "the environment is knackered what's a another drop of 134a".

if Any body says anything, wiuld they say anything if you drive a car into a another car at lights and blow ac condenser?

[WinWoj]

Hi M-H. Interesting posts.. Sometimes I think Your humour is dificult, maybe it is my inteligence problem.. nevermind... Customer gave me this AC machine, cous he gave it to many mechanics, electronics etc. I know IT, so I read flashes, make wire diagrams and measure everything.. I don't wanna do Z180 assembler a an*alysing for understand this mechatronical system, so I posted here. As You wrote, system waitnig for pressure exist signal. I found a few pressure switches, one of them is bigger, has 3 pins and only 2 wires, both AC230 present after switch on, so I dont know whats happend... No presseure, fan not working in down side of machine, nothing work, only LCD with "INITIALISING SYSTEM". I'll ****ys electromagnets driver pcb and check what is with every switch signals.. Maybe this signal path is broken in such pcb.. Or someone before me do something with this signal... Strange, for me - very strange..

[WinWoj]

Hi! look here
RA19427 Robinair High Pressure Switch

Hi, I checked all switches in this machine, tested both 'open' and 'bridged' state, no R134a inside. Still function stopped, is some another signal to block starting this cool machine?

[juniormaxxx]

only LCD with "INITIALISING SYSTEM".

well Iam prety sure this is not any presure or any coil or any switch problem..this is smart machine and she failed on initialising..not on selftest..only initialising...like booting windos...when you power up such machine it need to boot.. database for cars...prety sure you fail at that moment...she doesnt know how to go further...so all components can be in working order in OK status..but sw is youre problem...I personaly dont like smart machine like that...I dont like any machine if she stoped me in my work to earn money...
contact robinair this are expensive toll so they must have suport