Inspecting The Starter System - Daikin GYEQ20AN Service Manual

Inspecting the Outdoor Unit
1.2

Inspecting the Starter System

Transformer
transformer
Self-starter
∗ This should be tested approximately 10 minutes after stopping (because the 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
3. If the harness and connectors are OK, then check each component.
[Note] Perform voltage checks by applying a tester to the back face of each connector, rather
Inspect the fuses on the harness to make sure they are not blown.
Inspect the transformer by measuring the resistance between its terminals.
Between red and black terminals on the primary side
Between blue terminals on the secondary side
∗ At 20°C (reference value)
Inspect the reactor by measuring the resistance between its terminals.
∗ At 20°C (reference value)
171
Activation timing
Transformer relay (RY8)
ON
OFF
Starter relay (RY3)
ON
OFF
Output voltage
Parts to
Measuring points
inspect
Between power supply circuit
relay board's RY8 terminals
Starter Between R and T terminals on
the primary side
Between S terminal and
ground
motor
Between B terminal and
ground
immediately after stopping will be the same as while running).
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.
than unplugging the connector.
Fuses on the harness
Part Purpose
On the For S terminal
harness
For M terminal
Inspecting the starter transformer
Measuring points
Inspecting the reactor
Measuring points
GYEQ20AN
∗
Between terminals
GYEQ30AN
After approx. 10 min
Power System Startup System
ON startup complete stop
During system stop After
startup (while running)
During stop: No continuity
While running: Continuity exists
During stop: 0 V
While running: 200 V AC
During stop: 0 V
While running: 0 V
During stop: 0 V
While running: 12 V DC
32 V DC/30 A
32 V DC/3 A
Model Measured value (Ω)
SiAUY361411EA
Actuator Actuator
check check
CH01 ： ON CH01 ： OFF
023303-00E
At system startup
(with actuator CH01
∗
Continuity exists
∗
Capacity
∗
Measured value
520 mΩ
40 mΩ
∗
0.17
0.06
ON)
200 V AC
12 V DC
12 V DC
Parts Inspection