FH code on Whirlpool Duet Washer

[happyhen]

Model Number: GHW9150PW4
Brand: Brand
Age: Less than 1 year

Model Number: GHW9150PW4
Brand: Whirlpool
Age: More than 10 years

Our Whirlpool Duet is flashing FH error code about 2 minutes into the cycle.

Water runs in fine, spinning begins and then code flashes.

If we hit 'cancel' then 'start', cycle begins again (water runs in, washer spins some etc) then it flashes again after 2 min.
If we let it go, it will drain and spin out all the water it has run in. Then shortly will just stop, still flashing FH

We have had the CCU replaced, the pressure switch replaced, and the valve inlet replaced.
There is no flow meter on this model.

There doesn't appear to be any leaks in any hoses.

I have also checked:
that both valves at the water source(s) are turned on all the way.
for plugged or kinked inlet hoses
Drain pump works fine
Wire harness connections are tight
There are no leaks
Diagostic Test gives me the FH Error at C0:1, C0:3, and C05

Any other suggestions?

Thanks