10-6
LED display
Description Cause
Possible solutions
PF
Protection Fault
OH1 error occurs for 3
times in 5 minutes when
run command in
multi-function digital input
terminals is not removed.
Run command in multi-function
digital input terminals is not
removed.
Remove run command in
multi-function digital input
terminals.
TOL
External
Overload
External overload
(enabled only when
firemode activated
External overload in multi-function
digital input terminals. (Ex. Fan
overheat)
Check external overload.
Reset external overload of
digital input.
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