Our Fisher & Paykel Intuitive Q came up with an Error Code 51, Stopped and an Alarm came on.

this is a faulty transducer which is located on the main board unfortunatley you will need to replace the whole thing

This is error code 51
51. (00110011) Phase 5 and 6 Eco - Diverter Valve Fault
Primary: The motor controller has registered a drop in water level in the
recirculation phase of the wash cycle, water is being drained instead of recirculated.
Or water has been sprayed onto the Valve from an external source and caused the
solenoid to blow.
Action:
Turn the power off at the machine but leave the power on at the wall, then measure
the voltage across the terminals of the wax actuator, if a reading of 230V is
achieved the motor controller has failed due to the valve and both will need to be
replaced.
Secondary: Check for blockage in the valve itself or a broken hinge mechanism.

intuitive ECO Model IW811 display error code 49...any one can help me

Hi just read your posting.Error code 51 means you have a Recirculation Fault.This means while the machine is filling or washing it loses water.Error code 37 means you have Pump Block error which means the machine is not draining.Please look under the machine to the front right and you should see a pump with a red or black fan attached.Can you confirm this please? I think there is a problem with your diverter valve and the information on your type of pump will help me rectify this problem for you.Please reply with additional information on the type of pump in your machine.Looking forward to your reply.

136 fault is 'motor stall'...Quite often this is a broken wire to the motor. However it could also be a Motor fault, or Rotary Position Sensor problem. Water damage can cause this fault as well. After a visual check for broken wires or water damage, and if your machine is in good condition, you should consider a tech....Good luck...Nomess

fault code 136 is a hard one possible causes are faulty rotor speed sensor on motor,siezed bearings or rotor,motor windings ,or motor control module, would suggest you get a tech for this one to diagonse correctty ,without proper tools to test eg: rss tester you could cot yourself more money... hope this was some help....:)

what is the problem?

Our washer did the same but it was after I took the excess drain hose and pushed it into the drain in the wall. I thought it looked "more tidy" In doing so I created a siphon effect. Once I pulled the excess hose back out it was fine.

There's a diagnostic sheet under the keypad panel if you can't find out what's going on any other way. The company has excellent customer service. Give them a call, or send an email.

The rotor position sensor is faulty or corroded. You will need to remove the motor to access the RPS. It is a small electronic board that slides onto the coils of the motor.