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[8-8 Troubleshooting LEV Problems ]
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HWE14040
GB
8 Trou
ble
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ho
oting
Bas
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d on Obse
rved
Sy
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3) Pulse signal output and valve operation
4) LEV closing and opening operation
Output state
Output
(phase)
number
1
2
3
4
1
ON OFF OFF ON
2
ON ON OFF OFF
3
OFF ON ON OFF
4
OFF OFF ON ON
Output pulses change in the following orders when the
Valve is closed; 1 2 3 4 1
Valve is open; 4 3 2 1 4
*1. When the LEV opening angle does not change,
all the output phases will be off.
*2. When the output is open phase or remains ON,
the motor cannot run smoothly, and rattles and vibrates.
*Upon power on, the indoor unit circuit board sends a 2200 pulse
signal to the indoor unit LEV and a 3200 pulse signal to the outdoor
unit LEV to determine the valve position and always brings the valve to
the position as indicated by " A " in the diagram.
When the valve operates smoothly, no sound from LEV or no vibration
occurs, however, when the pulses change from E to A in the chart or
the valve is locked, a big sound occurs.
*Whether a sound is generated or not can be determined by
holding a screwdriver against it, then placing your ear against the handle.
*1 The LEV opening may become greater depending on the operation status.
V
alve opening (refrigerant flow rate)
Valve closed
Valve open
E
B
80 - 100 pulses
Pulses
Fully open
.1400 pulses (indoor unit LEV) *1
.2100 pulses (outdoor unit LEV) *1
A
C
D
Содержание PUHY-P1000
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Страница 40: ... 2 6 System Connection Example 31 HWE14040 GB 2 Restrictions ...
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Страница 171: ... 6 11 Standard Operation Data Reference Data 162 HWE14040 GB ...
Страница 243: ... 7 9 Error Code Definitions and Solutions Codes 7000 7999 234 HWE14040 GB ...
Страница 295: ... 8 13 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit 286 HWE14040 GB ...
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