Haier 2U14CS1ERA Service Manual

Also see for 2U14CS1ERA: Installation manual Installation manual

Haier 2U14CS1ERA Service Manual Manual pdf 29 page image

2U14CS1ERA-SM Functions and control26Domestic Air Conditionerclose the four-way valve.5.2.5 Protection function5.2.5.1 TTC high temperature-preventing protectionOnce the machine is started, it can run TTC overheating protection of air-blowing, but air-blowingsensor malfunction must alarm after 4 minutes during which the compressor is started (during thecourse of self-detection, there’s no such limitation)Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms,detection method for each time: continuously sampling for 8 times, then order them and take themean value of the middle 2 values), take the mean value.TTCAbnormal stop110Decreasing the frequency rapidly 1HZ/second100Decreasing the frequency slowly (1HZ/10seconds)98The frequency doesn’t change.93Increasing the frequency (1HZ/10second)90Increasing the frequency 1HZ/1secondTTC>=110 lasts for 20 seconds. Overheating protection of air-blowing, alarm malfunction tothe indoor, others don’t last.5.2.5.2 TC high temperature-preventing control of the indoor heating unitTpg_indoor is the highest value of the effective indoor unit (start it and it is in accord with therunning state).The indoor heat exchanger sensor tests the temperature of the indoor heat exchanger. If thetemperature is higher than 55 , decrease the rotate speed of the compressor and do the hightemperature-preventing protection of the indoor heat exchanger; if the temperature of the indoorheat exchanger is lower than 47 , recover to the normal control.TC The compressor stopsFgh_t1 2 Fgh_t1 65N Decreasing the frequency rapidly Fgh_t259Fgh_t2 2 P Decreasing the frequency slowlyFgh_t3 55Fgh_t3 2 Q Prohibiting increasing the frequencyFgh_t4 51Fgh_t4 2 R Increasing slowly Fgh_t5 47Fgh_t5 2NormalN Decreasing at the speed of 1HZ/1 second