Cement concrete standard curing box troubleshooting:
1, power led is not lit, that power is not entering the instrument in determining the external power supply under normal conditions, check the switch, fuse is intact.
2, indoor temperature and low heating led is not lit, should check whether contactor, or contactor contacts erosion, if light is on but the indoor temperature is very low then the fever bad.
3, indoor temperature cooling LEDs do not light up, check whether the temperature controller with cooling system off. If the light is on check the overload protection device is intact, check for normal compressor replaced bad.
4, indoor temperature, should be retro-fan. Fault sent to departments through the above checks in addition to cooling system repairs, but other failures can repair itself.