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_TROUBLE SHOOTING GUIDE BOOK __
It is the outdoor unit address setting function for outdoor unit when central controller is installed.
■ Setting the function
Function Option
ODU Addressing Fn 5 0 ~ 254
■ Option Selection
Setting Detail of function
0 Default (Not Install a central controller)
1 ~ 254 Number of outdoor unit
■ Detailed information
•
This function is used with heat pump and heat recovery.
4.5 ODU Addressing
· Ask an authorized technician to setting a function.
· If use a function, first install a central controller.
It is a function to prevent accumulation of snow in the snowy area or to judgment the fast defrost in the
humid area.
■ Setting the function
Function Option
Snow Removal & Rapid Defrost Fn 6 oFF, op1~op3
■ Option Selection
Setting Mode
Fan speed during snow removal (RPM)
UXA UXB
oFF Not setting
- -
op1 Snow removal 670 850
op2 Rapid defrost
- -
op3 Snow removal & Rapid defrost 670 850
■ Detailed information
1. Snow Removal
•
A function to prevent the snow from accumulating and blocking the flow path during the outdoor
unit non-operation.
(set in areas of the country where snow may accumulates on the top of the unit)
•
Outside temperature 3 degrees or less, 2 minutes every 30 minutes outdoor fan operation while
non-operation.
2. Rapid Defrost
•
This is optional logic that limits the severity of frost accumulation on the outdoor unit coil between
defrost cycles. it calls for more frequent defrost cycles.
•
Rapid defrost start condition.
Conditions
Tout ＜ 0℃ ΔTt ＞ 9℃ Tt ＜ -15&&operating time ＞ 90min
0℃ ＜ Tout ＜ -15℃ ΔTt ＞ 10℃ T indoor, pipe in(avg) ＜ 40℃
Tout ≤ -15℃
-
operating time ＞ 120min
Tout ＜ 5℃ RH ＞ 85% operating time ＞ 180min
* ΔTt : Outdoor Temp. - Heat Exchanger Temp.
4.6 Snow Removal & Rapid Defrost
· Ask an authorized technician to setting a function.
· If do not use a function, set an off-mode.
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