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The high and low temperature alternating heat and humidity test chamber will encounter some faults caused by the instrument itself during use. Sometimes the whole machine will not start. When such a fault occurs, the fault analysis and diagnosis should be carried out as follows:
First, check whether the connection is in good condition, whether the main switch is in good contact / burned or damaged, timely repair or replacement;
Second, high and low temperature alternating heat and humidity test chamber contactor / relay contact is good or burned and damaged;
Third, the table over temperature setting is correct / whether it is burned and damaged, reset or replaced;
Fourth, the power supply line (phase sequence relay) phase sequence connection is correct or burned and damaged, reconnect / replace;
5. Whether the pressure controller pressure adjustment is correct or whether it is burnt and damaged, re-adjust or replace.
The above information is provided by Beijing Yashilin Testing Equipment Co., Ltd. For details, please visit Yashilin **: Failure analysis and diagnosis that can not be started in high and low temperature alternating heat and humidity test chamber http:// 
