What do the alarm codes 'P1' and 'P2' mean on the display?

'P1' indicates a room probe failure, causing the compressor to operate on timed cycles according to parameters 'Cy' and 'Cn'. 'P2' indicates an evaporator probe failure, which causes defrost termination to become timed rather than temperature-controlled. Both alarms automatically clear some seconds after the probe returns to normal operation — check connections before replacing the probe. (Page 2-3)