Daikin GYEQ20AN, Руководство по обслуживанию

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SiAUY361411EA Inspecting the Outdoor Unit
Parts Inspection 174
1.4 Inspecting the Mixer System
„
Output voltage
1. Using a tester, check if the output voltage requirements specified above are met.
2. If the voltage is significantly different than specified above, stop the system using the
onboard checker and wait for 5 minutes; then, with the power OFF, check the harness for
continuity and the junction connectors for contact failure using a tester.
3. If the harnesses and connectors are OK, then check each component.
„
Inspecting the mixer
Inspect the mixer by measuring the resistance between its terminals.
Parts to inspect Measuring points Power supply ON
Throttle valve
Between main circuit board's CN8-1 and CN1-3 12 V DC
Between main circuit board's CN8-3 and CN1-3 12 V DC
Fuel control valve
Between main circuit board's CN8-2 and CN1-3 12 V DC
Between main circuit board's CN8-4 and CN1-3 12 V DC
Throttle valve Fuel control valve
Measuring points Measured value Measuring points Measured value
Between terminals #2 (red)
and #4 (white)
120
Ω
Between terminals #2 (red)
and #4 (white)
120
Ω
Between terminals #2 (red)
and #6 (brown)
120
Ω
Between terminals #2 (red)
and #6 (brown)
120
Ω
Between terminals #1 (black)
and #3 (blue)
120
Ω
Between terminals #1 (black)
and #3 (blue)
120
Ω
Between terminals #1 (black)
and #5 (yellow)
120
Ω
Between terminals #1 (black)
and #5 (yellow)
120
Ω
1 2 3
4 5 6
Fuel control
valve
Throttle valve
1 2 3
4 5 6
020955-00E
S
1
(Brown)
+B (Red)
S
3
(White)
S
2
(Blue) +B (Red) S
4
(Yellow)
GVM
THM
PM
(Equivalent circuit of step motor)
025943-00E