Maxay yihiin sababaha kuleyliyaha ku guuldareystay ee foornada iska caabinta nooca sanduuqa heerkulka sare

1. Heating element: The direct consequence of heating element failure is that the high temperature box-type resistance furnace heats up slowly, or the temperature does not meet the requirements for use, usually because of the heating element failure.

2. Power supply: Power failure may also cause the electric furnace to heat up slowly, but it is more likely that the electric furnace does not heat up, mainly because the power supply voltage is abnormal or the power supply is damaged.

3. Xakamaynta foornada korontada: Muujinta ugu weyn ee dhaawaca korantada korantada waa in foornada korantada aysan kululayn. Waxay u badan tahay in dareemaha gudaha ee kontaroolaha uu dhaawacmo, ama fiyuuska iyo furaha safarka albaabka foornada ay dhaawacmaan.