It appears from your and other postings that some form of protective cover is certainly a good investment to stop water entering the Raymarine tillerpilot. Thanks for your tip.
I'll add mine to the list. After my AH2000 gave up after some 15 years of faultless service in all weathers, the replacement ST2000 lasted a week. It wouldn't hold a course, bleeped at random, showed a variety of random segments in the display and then stopped driving the actuator altogether.
On return from our two week cruise I sent it back to Raymarine through Marine Super Store (very helpful bunch). They called me promptly to say that Raymarine reported that they couldn't find anything wrong and it's working fine on the test bench.
My best guess is some green stuff (it was rough coming out of Weymouth) got in the works and slowly dried out over the hols. There's probably some corrosion now working away that will reveal itself as soon as the warranty exprires.....
A tiller pilot should be waterproof - period.
They are not - B***dy ridiculous.
The basic tillerpilots from both Simrad and Raymarine suffer from the design shortcoming that the electronics are directly under the single membrane in which the buttons are formed. If you give the buttons a firm push when it is raining there is a danger of water leaking around the edge of the membrane. You can be lucky or unlucky. I know people with good experience of each brand whilst others have poor experience.
If you don't get a decent life or economical repair for your tillerpilot if it is out of guarantee - sue the supplier. Time consuming I know but the manufacturers need to learn the lesson.
I have had a Simrad TP10 which failed out of guarantee but after only six outings. I had to go to law to get a refund. Pity, I preferred its simplicity which suited me. Now I have a Raymarine ST2000 which so far works very well. Looking inside both, It seems to me that actually Raymarine have taken more care over the seal around the edge of the membrane.
It is interesting that in PBO's test report, neither manufacturer claimed to comply with a mainstream European waterproof standard.
Nonetheless because of the common experience I shall be very gentle with the buttons and looking at making a cover for it - Ludicrous isn't it.
BTW. Steve & Rob, Would you mind if I posted your pictures of tiller pilot covers on my class web site?
Like you, I cannot understand why none of the tillerpilot manufacturers make a completely waterproof one. I have now made a fabric waterproof cover for mine that completely covers the body and the buttons so that I now operate entirely from the wireless remote control.