Hi can any one help on this one
Daikin AHU sorry can’t remember the model number but the display has A B C on it, no fault codes on the display no warning lights on, metered out the thermister check ok, transmitting to and fro from AHU and cond’s but will not bring on the out side unit, set at 18c, air on 28c, turn the power on it run’s on down to its set point then will not cut back on, indoor pcb change still the same, customers not very happy and my service manager
Help please
Ps condensate pump not wired into the control circuit