Setting item DescriptionAll ways turn on alarmMaintain alarm on operationMaintain alarm on fixed control operationMaintain alarm on program control operation4 buttons in the system alarm setting screen [FIG 100] on the above select the operationcondition (Operation condition related to the set value) and information is as follows.[FIG.100] System alarm setup screen [FIG.101] System alarm code setting71The TH500 / 300 is equipped with the total 16 PID ZONEs. As shown in the chart below, the fourtemperature zones and four humidity zones are combined with each other, so you can control thetemperature and humidity with the optimized PID value. You are free to change the zone boundaryof temperature and humidity.Humi. Zone Temp. Zone0≤Humi. SV≤HZ1HZ1 ≺Humi. SV≤HZ2HZ2≺Humi. SV≤HZ3HZ3≺Humi. SV≤HZ4-100≤Temp. SV≤TZ1Zone 1Zone 5Zone 9Zone 13TZ1 ≺Temp. SV≤TZ2Zone 2Zone 6Zone 10Zone 14TZ2≺Temp. SV≤TZ3Zone 3Zone 7Zone 11Zone 15TZ3 ≺Temp. SV≤TZ4Zone 4Zone 8Zone 12Zone 166.5 P.I.D Setting※ TZ : Temp.Zone, HZ : Humi.Zone