Constant temperature and humidity test box can not be opened

What can we do if the constant temperature and humidity test box cannot be opened, the temperature and humidity box cannot be switched on, the temperature and humidity test box will not start up, the constant temperature and humidity box will not start up, and the constant temperature and humidity test box cannot start the constant temperature and humidity test. The box is the high-low temperature hot and humid test box, which is used to test the performance of materials in various environments and to test various materials such as heat resistance, cold resistance, dryness resistance and moisture resistance. Applicable to mobile phones, electronics, electrical appliances, communications, meters, vehicles, plastic products, metals, food, chemicals, medical, building materials, aerospace and other products used for testing quality. The high-low temperature damp heat aging box is a sophisticated high-end instrument with many internal and large spare parts. When a certain component fails, the damp heat aging test box may not start, and the constant temperature and humidity box cannot be opened. Concerning the user's confusion in the process of use, Dongguan Corwin provides you with a complete set of fault analysis manuals to help you more in-depth grasp of high and low temperature humid heat aging box.
Symptom: The whole machine of the high-low temperature damp heat aging box cannot be started. Troubleshooting and solutions:
A, whether the connection is good
a reconnect
B, the master switch contact is good / whether burned or damaged
b Repair/replacement
C, contactor or relay contact is good / whether burned damage; instrument over temperature setting is correct / whether burned or damaged
cReset/Change
D, the power line (phase sequence relay) phase sequence connection is correct / whether burned or damaged
d Reconnect/replace
E, pressure controller pressure adjustment is correct / whether burned or damaged
e Re-adjust/replace
F, no heat connection contact is good
f reconnect
G, whether the meter display is normal/output
g repair/replacement
H, instrument settings for constant temperature and humidity test chamber are correct
h Reset
I. Is the blower switch on/whether it is damaged or burned or the contactor is connected or burned?
i Reopen/replace
J、Whether the heating switch is on/contact is good/whether it is burned or damaged
j open/maintenance/replace
K, whether the actuator (contactor, relay, thyristor, solid state relay) has output;
k change
L, whether the actuator (heating tube, heating wire) is burned or damaged
l Replace
M, temperature and humidity test chamber controller, regulator, electrical contact thermometer control is good / whether burned or damaged
m repair/replacement
N, heating is not controlled instrument display / control is normal
n Repair/replacement
O, whether the meter setting is correct/is it manual output
o reset
P, actuator contactor, relay contact is sticking or burned / thyristor, solid state relay is punctured
p Replacement
Q. Whether the actuator heating tube or the heating wire is on the ground
q Repair/replace