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Rinnai 22 B Series Heat Pump OIM - Issue 1
IMPORTANT
Ensure the controller unit is not displaying the ERR indicator once unit has been switched on� If
it is refer to the section ‘Save a Service Call’ on page 10
Key Combinations
The keys can also be used in specic combinations to provide additional functions:
Press and hold the two keys for 5s to enter into manual intelligent distribution network
connection model
When heat pump is running in heating mode, press the two keys and hold for 3s to turn
ON/OFF Boost mode (turn ON/OFF heating element)
When heat pump is running, press the two keys and hold for 5s to start/exit defrosting
mode
When power is on the heat pump, press the two keys and hold for 5s, to enter into Venti-
lation mode. To run in high speed, press the two keys for 3s. To run in low speed. Press
the two keys for 3s again. To exit Ventilation mode press and hold the keys for 3s again.
Press the three keys and hold for 5s to turn ON/OFF disinfection mode
Within 5 minutes of powering on and without the heat pump running, press the four keys
and hold for 5s to restore the factory setting
LED ICONS
Symbol Function Meaning when Lit Meaning when Flashing
Heating Mode Heating Mode Active -
Heating Element Heating Element Active 1s: Boost Mode
2s: Disinfection Mode
WiFi WiFi Connected Searching for Network
Real Water Temperature Displays Actual Current Water
Temperature
-
Set Water Temperature Displays Set Water Temperature -
Defrosting Defrosting Active Refrigerant Recovery
Mode Active
Maintenance Reminder Maintenance Required (See “Save
a Service Call” on page 10)
-
Error Warning Error Present -
Screen Locked Screen Lock Active -
Compressor Running Compressor Active -
High Fan Speed High Fan Speed Active -
Low Fan Speed Low Speed Fan Active -
Timer Timer Active (see “Operation Timer
Setting” on page 24)
-
OPERATION
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