8
Root Cause Analysis
1.
Heating Elements Checking
Definition:
Heating Element is a metal coil that heats up to high temperatures, when
electricity is applied. To check the Heating Element, follow the steps below:
- Disconnect cables from the Elements.
- Set Multi meter to Ohm range "Ω" or "
)
)
)
) "and check as show in the pictures.
Check
Meter Result
Cause
Action
Pole – Pole
"Beep" signal or (~ 0 Ω)
Element Pass
No action
No signal "OL" or (
Ω)
Element Broken
Change New Heater
Pole – GRD
"Beep" signal or (~ 0 Ω)
Element short to tank Change New Heater
No signal "OL" or (
Ω)
Element Pass
No action
Remark: "OL" = Over Load for Digital Multimeter, "
Ω" = Over Load for Analog Multimeter
Pole - Pole
(P1 - P2
)
P1
P2
Pole - GRD
(P1 - GRD
) or (
P2 - GRD
)
Or
GRD
P1
P2
GRD