dalkin altherma heat problems

[yoyo]

hi
i have an dalkin altherma 16 system installed in conjuction with alurad radiators.

problem is i have my system set to 30deg but the radiators are practically cold. when i turn it to max 55 deg the rads heat the house well.

currently water temp is 25.4, temp outside is -0.5, system set to 30deg.
rad temp is slightly warm/cold (even turned off 8 rads in the house)
i dont have internal thermostat.

any ideas??
thanks in advance

[frank]

Set the heating set point to 55 on the controller.

[yoyo]

hi frank tnx for the fast response.

went into field function to no 9.00 (heating set point ranges) 00 was set at 55deg
01 was set at 25 but i changed it to its max of 37deg.
is that correct?

[frank]

I didn't mean for you to alter the Service Codes. Once these have been set by the commissioning engineer they should not need changing
Has the system been properly commissioned?

[Stuart Walker]

Reset the service settings back to where they were originally set at because changing these will cause no end of problems

Check the design spec of the system and radiators on it, they should have been sized with a dedicated flow temp, most heat pump design temps will be set with a flow temp of 45 degrees, but the design You have may be different

If you need any help with the settings let me know as we are a Daikin service agents

Stuart