Troubleshooting
 Page 94 
5.4 E8 for ceiling&floor type and super slim cassette type&EE for A6 duct type (Water
level alarm malfunction diagnosis and solution)
Description: The water level switch is at the max. position to shut down the unit.
Recommended parts to prepare:
• Faulty drain pump (for units with drain pump)
• Installation mistake of water level switch (for units with drain pump)
• Short-circuit jumper is missing or broken (for units without drain pump)
• Faulty indoor PCB
Troubleshooting and repair:
P o w e r o ff, th e n re sta rt th e u n it 2 m inutes
later. Is it s t ill d is p la y in g t h e e rro r c o d e ?
P o w e r o ff, th e n re sta rt th e u n it 2 m inutes
later. Is it s t ill d is p la y in g t h e e rro r c o d e ?
Replace the w ater pum p
Replace the w ater pum p
If the w ater-le v e l s w itc h is
broken?
If the w ater-le v e l s w itc h is
broken?
If the w ater-le v e l s w itc h is
inserted w ell?
If the w ater-le v e l s w itc h is
inserted w ell?
In se rt th e w a te r-le v e l s w itc h
w e ll
In se rt th e w a te r-le v e l s w itc h
w e ll
NO
YES
Replace the w ater-le v e l s w itc h
Replace the w ater-le v e l s w itc h
NO
YES
Replace the indoor m ain PC B
Replace the indoor m ain PC B
YES
If m a lfu n c t io n is s till n o t
s o lv e d ?
If m a lfu n c t io n is s till n o t
s o lv e d ?
YES
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