28
OCHT669
BACK-UP HEATING FUNCTION
9-1. Operation
The back-up heater turns ON when both of the following conditions have been satisfied:
A) When the room temperature has not risen after the heater ON delay time has passed.
Note: The heater ON delay time starts when the condition of “set temperature
−
room temperature > 1°F [0.5
:
]” has been satisfied.
B) Set temperature
−
room temperature
]
3°F [1.5
:
]
The back-up heater turns OFF when the following condition has been satisfied:
• Set temperature
−
room temperature
[
1°F [0.5
:
]
Set temp.
−
room temp. 1°F [0.5
:
]
Heater output ON
Heater output OFF
The heater output turns ON
when both the conditions A and B
have been satisfied.
9-2. How to change the heater ON delay time
You can set these functions by wired remote controller (Request code).
Note that the change can be made only by the wired remote controller PAR-33MAA.
Notes:
1. If using a twin indoor unit system, both main and sub unit should be set in the same setting.
2. Every time replacing indoor controller board for serving, the function should be set again.
3. Stop the air-conditioner operation before changing the heater ON delay time.
Setting No.
(Request code)
No.1
Monitoring the request
（
390)
code of current setting
No.2
（
391
）
No.3
（
392
）
No.4
○
（
393
）
No.5
（
394
）
25 minutes
Setting contents
Initial setting
10 minutes
15 minutes
20 minutes
9-3. How to connect
When connecting to the connector CN24 of the indoor unit, use PAC-SE56RA-E (optional parts).
Note: If using a twin indoor unit system, connect to the CN24 of the indoor unit that the remote controller is connected to.
3°F [1.5
:
]
Request code list
9
SPECIAL FUNCTION
