Fisher Paykel drawer stops with 35-39 minutes left to run

One of the drawers stops close to the end of the cycle (35-39 minutes(longer when running “Heavy” cycle)). No error codes displayed but it does sound 3 beeps every minute as if it’s expecting some intervention. Pressing the pause button causes the draer to resume ro completion and the dishes appear to be washed properly. Has anyone else seen this or know the cause?

Our house has a hot water recirculator pump which delivers hot water to tap in about 3 seconds, when working but pump was broken and took about a minute for the water to get hot. Replacing the pump stopped the dishwasher from hanging up, I guess it’s way of complaining about getting cold water. I don’t understand why it did not pause until close to the end of the cycle or why only one of the drawers failed. I guess I should not worry since it’s now working fine.