Re: Mikuni MX60 problems
- From: frank_auffret_remove_this_bit_@xxxxxxxxxxx (Frank Auffret)
- Date: Sun, 20 Nov 2005 23:38:22 +0000 (UTC)
On Sun, 20 Nov 2005 08:47:45 +0000, poundeater@xxxxxxxxxxxxxxxx wrote:
>I question the control philosophy on the Mikuni if it faults with a
>restart during shutdown. If it cannot restart during shutdown then
>IMHO It should ignore restart, finish shutdown and then restart as
>normal.
I agree I did rather expect the Mikuni MX60 contol box (which based on
it's size seems to hold more goodies than the much smaller MX40
control box) would be able to detect when the unit is in shutdown and
not try to restart.
When I asked Mikuni about this they told me the unit should function
ok with the TP5 but to use the same differential settings you suggest
and never use the frost stat setting. When I pointed out that this
was, at the lower end, the same as frost stat and that the TP5 doesn't
have an 'off' they seemed quite surprised. They seem quite eager to
help solve this problem and promised to get back to me soon.
This weekend I did change my TP5 settings to 30 / 5 but if the outside
temperature stays lower than 5 for more than a few days I don't see
how the restart problem can be avoided.
Basically the TP5 switches off at the set temperature and back on when
the temperature falls below that set temperature. It's the same
process whether the setting is 5 or 30.
It all really depends how quickly the temperature inside the boat
falls below the set temperature and if that happens while the shutdown
phase is still in progress - same carbon build up just a lower boat
temperature.
It's only when the outside temperature is above 5 degrees that the 30
/ 5 differential will work i.e. it's unlikely the boat temperature
will ever reach 30 so the TP5 doesn't call for shutdown on the higher
setting times and the boat won't get colder than 5 so the unit won't
call for heat when at the lower setting times. During a mild winter
it's easy to see why this wouldn't cause probelms.
>I could not find the wiring diagram on the Mikuni site, are you
>absolutely sure that it is wired correctly? The fact that some others
>do not have the same problem is of concern.
Yes I had the wiring checked by the Mikuni field engineer.
There was a mistake in the wiring digram supplied with the unit
(according to the 3 pin plug connections for the switch loom, live
connects to neutral). I didn't spot that immediately but corrected it
when I was working through the initial voltage drop problem.
Today I have spoken to 2 boaters who have used the TP5 on default
setting with no problems - one for over 2 years. In both case they
were using the MX40 - I wonder if the MX40 control box is able to
detect the shutdown phase and not try to restart? I have assumed that
all the contributors to this thread are using the MX60?
Frank Auffret
nb Midnight
http://www.friendsafloat.co.uk
.
- Follow-Ups:
- Re: Mikuni MX60 problems
- From: Gibbo
- Re: Mikuni MX60 problems
- References:
- Mikuni MX60 problems
- From: Frank Auffret
- Mikuni MX60 problems
- Prev by Date: Re: Shower cubicle wall panels
- Next by Date: Re: Tom Tom GO 500 GSP
- Previous by thread: Re: Mikuni MX60 problems
- Next by thread: Re: Mikuni MX60 problems
- Index(es):
Relevant Pages
|
