6 Troubleshooting
Outdoor unit
SMGB0135 rev.0 - 06/2020
60
6.1.2 Troubleshooting support
Nº Function Description
1 Display on the outdoor unit side
• The failure mode detected on the outdoor unit side is displayed by
blinking the “LD301”. Detecting a failure will stop the outdoor unit and
keep blinking the LD301 until it is restarted. (The communication error will
persist until the communication is reestablished.)
2 Self-diagnosis memory
• The failure modes detected on the indoor and outdoor unit sides are
stored in the nonvolatile memory of the indoor unit and can be read later
on. (The memory will remain even after power-o.)
• Moreover, the normal self-diagnosis display function which rarely occurs
will store and display failure modes that do not end up displaying the
indoor unit lamp. (Any such mode may be unable to be stored if indoor or
outdoor communications is in a failure.)
• The product stores 5 last-stored failure modes.
• There is a function for deleting memory. Once you clear the memory and
run the product for several days, you can read the failure modes and
check them, thereby detecting the less frequent failure phenomena.
• Failure modes can be checked by both the blinking of the lamp of the
outdoor unit and the display of the remote control liquid crystal display.
? NOTE
• The “self-diagnosis function of the communication circuit” available in our conventional models is now incorporated as part of the
normal self-diagnosis function.
• In the case of a failure in the communication circuit, you do not have to conduct a special operation and the operations can be auto-
matically divided into 3 blinking operations and 12 blinking operations of the timer lamp.
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