Suddenly the steam pump seems to working at a higher rate, something like 10 pulses per second, than when the unit was new and produces just a stream of hot water from the steam wand. Everything else works fine.
Hi tried99X. couple of possibilities: have you made sure steam wand is completely clean? allowed adequate time for water to heat? try looking inside: unplug machine, remove the ten screws on the bottom and gently lift away base: it does have wires connecting it to rest of machine so be carefull not to yank on them. locate the hose leading from the pump to the steam-arm (may be hard to see; use a good penlight and a small telescoping mirror if you have to; Autozone & other auto parts stores sell them for a couple of bucks-if you don't want to take off the entire casing of the machine. does the hose look okay?) also see if the pump has vibrated out of position. also, when's the last time you descaled? good luck!
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This means the water cannot flow through the machine. Normal fix is to
prime the machine (turn water dispenser on, fill a cup) or descale the
machine. Go through the menu, select descale, enter, then turn the steam knob fully anti-clockwise. You should put the descaling solution in the water tank first.
If you have the auto-descale in the menu then run it. Run the solution through the machine twice. Then rinse well.
The following procedure works when you get the ventilate error:
The Ventilate sign can be due to one or more of the following reasons: Cause 1- Water leaking from the inlet valve below the water tank. The hose from the inlet valve to the pump can be air locked. When using the hand pump, do not thrust its nozzle too deep Cause 2- Blockage in the passage of water due to clogged passage anywhere between the pump and espresso delivery nozzle. Cause 3- Pump is not working. Open steam/water outlet knob and hear the pump work. If you do not hear any noise from the pump, this may be the main cause. Cause 4- Flow meter is faulty. This part is like the water meter for homes. It measures the flow of water and signals the electronic board. The malfunctioning flow meter will not send signals even when water is flowing through it. Cause 5- Hose is disconnected and water is not flowing in the system. Cause 6- O-rings at hose connection is leaking, reducing the water flow to be sensed by flow meter. Cause 7- Boiler gasket is leaking. Reduces flow of water through the system. Cause 9- Brew unit is blocked, blocking flow of water through the flow meter. This also causes pump to slow down and ultimately stop with muffled sound within 15 seconds. Cause 10- Brew unit not connecting brew valve, preventing flow of water. Same sign under cause 9. Cause 11- Steam is leaking. Registers reduced flow of water at the flow meter. Cause 12- Solenoid valve is blocked or solenoid coil is bad. Same observation as cause 9. Cause 13- Electronic Control board is bad. Though rare it can happen due to condensed water from leaking steam. When steam is leaking or boiler is leaking, machine should not be used any more to prevent steam shorting the Electronic board. Some of the above causes can be checked and corrected before seeking technical help. Do not assume anything without physically checking each of the following: 1- Make sure the water tank is full. If the water tank has water level float, make sure the float is in its housing and it floats as water is filled in the tank. If the level float does not rise with the level of water, then replace the float. 2- Water is not leaking from below the tank. The inlet valve is good. If leakage is present, replace the gasket in the water inlet valve. 3- Prime the machine by opening the hot water knob for 20 seconds or pressing the hot water button. Hot water flow shows the boiler is not blocked with minerals and pump is good. The solenoid valve is good. 4- Water & steam flowing normal, check the brew group for blockage. Determine when was the last time brew group was cleaned. Clean the brew group as explained elsewhere on these pages. If the machine has pre-ground function, try making a fake espresso (without coffee). Make regular espresso in other models to make sure that water goes through brew group and espresso is dispensed. 4- If hot water does not flow because the pump is not activated, then pump is bad. Replace pump. 5- Pump starts to work but within few seconds its sound is muffled and finally stop. This indicates there is serious blockage in the water line or the boiler is clogged with mineral deposits. If water is leaking and seen on the counter top, the chances are that water is leaking from hose connections(replace O-rings) or the boiler is leaking from seams (replace boiler). 6- Prime the machine by opening steam outlet for 20 seconds. Steam flow shows that steam boiler / steam outlet is not blocked. If the steam does not flow, then steam boiler or steam passage is blocked. Replace steam boiler or steam valve 7- Check the solenoid valves to make sure that they open & close as the coil is energized. Solenoid valve is located between the pump and boiler. The pump is activated simultaneously as the solenoid valve when espresso selection button is pressed. Some models may have a solenoid valve near the steam valve. In these models, the solenoid valve is activated to allow passage for steam/hot water. If the valve is not functioning, the ventilate sign will appear. 7- Hear the pump work when priming the machine. Louder noise from the pump can be due to ** air-locked water hose, or ** water is not sucked from the tank or the pump is sucking air instead of water or ** the diaphragm inside the pump has lost flexibility and not developing pressure to push water forward ** the hydraulic system is blocked at one or more locations due to mineral sediment. Find the location and cause of the block and correct it. ** Clean the brew unit (see cleaning instructions) and make sure that a- the ground coffee used is not powdery fine. b- The dose of coffee grounds is not in excess specification c- check if there is blockage. Find the cause and remove it. 8- If steam and hot water flow is normal, but the ventilate sign persists, then the flow meter or the electronic control board is bad. Replace flow meter or the control board, as necessary.
Try also the following:
Press hot water button once. Message on the screen will not change, this is normal.
Open the steam knob and allow the water to flow freely from steam wand into a cup. The screen should now read "Hot water,ventilate", you may need yo empty several cups of water before message changes. In some case it is necessary to refill the machine container without interrupting the operation.
As soon as the screen displays "hot water," turn the steam valve off .
If the machine warms up again, then problem is fixed.
Does it produce steam? Does it start making Espresso and then stops after just a few seconds? In this last case you have a faulty flow sensor. I replaced mine but it only worked for a few weeks before failing again. If you are not getting any flow at all it could be that your coffee holder is blocked which can be fixed by cleaning. It could also be that the valves that control the flow are faulty. I replaced mine to make it work again. I gave up on the unit after many repairs and gave it away!
There is a reset button inside on the front side of the boiler (you have to take the top of the machine off. There are 4 screws and remove the water tank). It is located between 2 black wires and is a red button. Push it in and test. There is also an other problem that you might have. If the brew thermostat is bad it won’t heat. To test for this, push the steam switch and wait 15 seconds. Then open the steam knob and push the middle button and see if the water is warm. If it is then you need a new brew thermostat. That is the thermostat that has the red dot on the top. It sets on top of the boiler next to the steam thermostat. If you take the top off, make sure that the machine is unplugged.
Try running the gro;up without the portafilter in place, what does the water flowq look like: is it a nice strong flow or barely a dribble. If if is barely a dribble, backwash machine with purocaff and check shower screen, that may be clogged. If you have a nice flow then try adjusting the grind on the coffee grinder.
Does not seem normal! You should get plenty of steam for the frothing. Since the unit is new you should take it back and get a replacement. The unit needs to increase the temperature for steam, route the steam away from the espresso group to the steam unit and the pump needs to activate to create the high pressure. Any failure in this areas will create your condition. It also possible that your steamer is blocked but this is a new machine so this is unlikely but you should make sure that it is not blocked.