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Author Topic: help please! Just turned on WRB09 first time since buying it in 2005  (Read 10723 times)
wrigpm
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« Reply #60 on: January 06, 2011, 09:14:15 PM »

All

Just to help things along I will share my thoughts/findings!

We have a later version of the WRB09 and the flow switches are built in
We had the same starting problem as Roger - had to adjust the flow switches as they were set to max!
The wiring is essentially the same but the items in the control box are in different places (main PCB is the same though)
Rather than shorting out the inputs/flow switches, you can simply switch the small switches that are below the red row of LED's
All the inputs are low voltage and isolated so should be safe - us caution anyway!
I had the same E04 error - cause was air in the heating side
I have reconfigured the controller to take an external input (to turn the heatpump on/off) on the pin called 'Link' - hence do not use the timer on the heatpump

Hope that helps!

Paul
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