Operation Case Troubleshooting - Samsung MH026FNCA Service Manual

- Operation case
Q1 While using cooling or heating, indoor units display E161 Error code
This problem is caused by user's fault. User's simultaneously operate 2 more indoor units in the same time cooling
Analysis
and heating mode.
FJM is operate by just cooling or heating mode only. (Only, HR system can operate cooling and heating mode
Guidance simultaneously in the same time)
Outdoor unit will be operate by first received signal, another operation signal is not applied system.
Q2 While using cooling or heating, System turn off and display E416 Error code.
E416 is outdoor unit high discharge temperature safety control Error code.
Analysis After System restart automatically until 3 times, system stop and display this error.
System can be operated by remote controller signal and K3(reset) key input.
Check outdoor units installation environment.
Step 1
(air flow blocking, the halation of another outdoor air flow)
Step 2 Check refrigerant leakage.
Step 3 Check outdoor EEV operation.
Q3 While using cooling or heating, System Turn off and display E458 Error code
E458 Error is related with outdoor unit fan Error.
Analysis Especially, If system have a some problem in fan, in heating mode , it will be happened.
And In auto address setting, without pipe checking operation must be happened it.
Step 1 Check to outdoor fan operation.
Step 2 If outdoor fan operation is clear, start to pipe checking operation.
When Auto address setting is finished without pipe checking operation, in heating mode, outdoor unit refrigerant
distribution control is malfunction.
Guidance
It make our system to confuse it's condition.
But, basically this error code is concerned about fan error.
Q4 While using cooling mode, outdoor unit turn off and display E401 Error code.
This is caused by protection mode behavior.
Analysis
This is indoor Evaporator Freezing protection mode.
Step 1 Please, check indoor unit, whether inlet or outlet grill is closed.
Step 2 Please, check indoor unit, whether indoor fan is working.
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