Hoshizaki TM-500AAE, Service Manual

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When an error occurs, “E_” or ”c_”
will appear in the Display Window.
8. PROTECTORS
[a] INDICATION
When an operational error occurs, “E_” or “C_” will appear and blink in the Display Window
on the Operation Board, and the icemaker will stop. When a service call is received, ask
the user to check which error code is in the Display Window. Then, see the error code
table in “9. ERROR CODES” to locate the cause.
[b] PROTECTORS
1) Compressor
Internal Inherent Motor Protector
Senses a temperature rise of the Compressor, and internally shuts off the circuit.
Automatically resets when the temperature goes down. If the Compressor takes a long
time to restart, the Ice Production Timer may shut down the unit with “E1” in the Display
Window. In this case, press the Reset Button.
Internal Pressure Relief Valve
Allows discharge gas into the low side to prevent damage to the Compressor when the
discharge pressure rises excessively. The bypassed gas will trip the above-mentioned
Internal Inherent Motor Protector which will not reset until the temperature goes down.