Neptune MAH5500BWW Code OD
Here is a series of emails between Ron and I regarding an issue he was having with his MAH5500BWW Neptune washer...
____________________________________________________________________________________
Jeff,
Trying to resolve
issue where control panel shows code OD after running through complete wash
cycle, but begins to leak water from bottom edge of door, and leaves water high
in drum unless reset to spin cycle. Earlier code of ND proved to be false after
removing pump and checking for any obstructions, then testing motor to ensure
function. Door seems to be locked, but if wash cycle stops at code OD, the door
can be opened with resulting flood of water from drum.
Is this caused by
faulty lock, sensor, or control board failure?
Thanks
Ron
____________________________________________________________________________________
Hi Ron,
Might be a couple of issues
happening...
It
sounds like the pump is working if it drains in a short amount of time.
I wonder why the water
level is too high. There could be a water level issue that is allowing the tub
to over fill.
For starters, I would
try removing all the connectors on the circuit boards and re-seating them which
can wipe the connector pins if there is any oxidation.
Have you located the
tech sheet which should be in the top console area? There will be some
diagnostics you can run to test the functions.
____________________________________________________________________________________
Hi Jeff,
Thanks for the prompt reply. I haven’t opened the top of unit
yet. Thought the issue was going to be the pump with the original code “ND”. Will
follow your advice below and then move onto tech sheet if still having problem.
Will let you know the results.
Ron
____________________________________________________________________________________
Hi Jeff,
Opened control housing and front of washer today. Pulled all
connectors off, then pushed back on to pins in each case. Found no corrosion or
debris on connectors or pins. All pin surfaces looked to be bright, not
oxidized. Found tech sheet and used it for next steps. Did a continuity check
on p3 & P8 as suggested on tech sheet; continuity showed good.
Placed the washer into diagnostic test mode to see if I could
get the door lock to do so and unlock. Pushing the button stated on the tech
sheet produced no response for lock or unlock or give a code, as I pushed the
door button inward and held it. However, once I fully assembled the front and
reattached the door I reset the diagnostic mode and was able to get the door
lock to engage and disengage with a satisfying click each time. The door seal
appears to be in perfect condition and I checked the small hose from the door
seal to drain and found no obstruction.
Next I followed the tech sheet instruction for reading the help
codes stored in memory. I’ve listed them below with the number of times they
were recorded. The only common denominator I see in the codes is “faulty
control board”. When I inspected the control board there was no sign of broken
solder, loose components, burned or charred connectors or components.
Codes in
Memory
Number of instances
01 No Drain
3
03 Faulty Door Latch
Sensor
9
05 Faulty Unbalance
Switch
6
05 Faulty Unbalance
Switch
1
17 Faulty Door
Switch
0
23 (can’t read my
note)
3
Finally, we previously tried to run a quick load to test the
door lock and seal, but had standing water in the drum with door pushed and
leaking at bottom. We opened door to reduce water level, then set washer to
spin to drain and retrieve load materials. When machine stopped, we pressed the
stop button and all control panel lights went dark. We were working nearby and
noticed that the washer powered up again and showed double-digit time in
display. We pressed stop button again and all lights went dark. Then
washer powered up again and we hit stop, then pulled power cord. I’m pretty
sure we caused some of the faulty door latch issues by opening the door and
trying to proceed to different cycles without cancelling fully and going back
to start.
Your thoughts on this problem would be greatly appreciated.
Thank you,
Ron
____________________________________________________________________________________
Hi
Ron,
First, the machine is
either over filling or not draining properly if water is up to the door. Have
you verified the discharge hose has good flow when pump should be running?
I would check to make
sure the water level pressure switch has the hose going from bottom of outer
tub to the pressure switch in the top console area. The hose may have a clog in
it and that could cause over filling.
____________________________________________________________________________________
Hi Jeff,
Checked discharge hose and all other small hoses at top of
machine, then double checked 90-degree hose from bottom of outer tub to pump
which has water level pressure switch mounted to top of plastic frame which has
pump and electronics attached, then twists into bottom pan of washer. All hoses
were clear of any debris or small sediment.
Attempted to run a load of light clothing with resulting water
level rising above inner tub and pressing door agape at bottom with water
flowing onto garage floor and into base drawer. Pressed door tightly against
seal and selected spin cycle. Pump evacuated all water from tub and flow from
discharge hose was steady as it went into plumbing at wall.
Since no clog is present, it seems that the water level pressure
switch may be the culprit. Have ordered part and hope to install Tuesday. Will
let you know results. I could not identify hose going from bottom of outer tub
to a pressure switch in the top console area on this model; MAH5500BWW. The
only switches/valves in top console area seem to be related to the flow of
water into the soap/bleach dispensers.
Ron
____________________________________________________________________________________
Hi Ron,
First, the machine is
either over filling or not draining properly if water is up to the door. Have
you verified the discharge hose has good flow when pump should be running?
I
would check to make sure the water level pressure switch has the hose going
from bottom of outer tub to the pressure switch in the top console area. The
hose may have a clog in it and that could cause over filling.
_____________________________________________________________________________________
Hi Jeff,
The water pressure level switch was the culprit. Replaced with
factory part, ran test load without any problem. Repair complete.
Thank you for your advice and blog.
Sincerely,
Ron
_____________________________________________________________________________________
Here is a link to the MAH5500BWW Neptune front loader water pressure switch http://appliancepartsupply.com/jeffhartman/Appliance-Parts/12001891
I hope this post was helpful!
Jeff Hartman
"The Neptune Man"
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