Navien CH-180, Service Manual, Page: 107 / 155

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Error occurrence conditions and check items
5.25. 36Error
Error Description
If no response is made during communication between the mast unit and the slave
units, the system displays the 36E error message.
1. Check if power supply to a boiler unit is off.
2. Check if the communication cable is damaged or disconnected.
3. Check if the dip switch setting is correct.
4. Check if the cascade setting is correct.
36E
Communi-
cation error
Check
items
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