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Checking Heater Solid State Relays
1 Disconnect and lockout the main power supply.
2 Open the control center door.
3 Locate the process solid state relays (SSRs). Refer to the wiring diagrams that
came with your heater.
4 Check the resistance using an ohmmeter.
6-10 l
Troubleshooting
IMPORTANT: Always refer
to the wiring diagrams that
came with your heater to
locate specific electrical
components. Illustrations in
the User Guide are intended
to be representative only.
Solid state relays
Check the resistance between
the terminal screws. If ohms
equal zero, replace the relays.
ON
O OFF
Terminal Screws