Daikin BHGP26A1, BHGP26A1E, BHGP26A1EH Operation manuals

Failure diagnosis tool for ZEAS_A type

Digital Pressure Gauge Kit

BHGP26A1(E)(H)

RDUH11-063

Connected model

ZEAS (A type)

LRLEQ5AY1(E), LRLEQ6AY1(E), LRLEQ8AY1(E), LRLEQ10AY1(E),
LRLEQ12AY1(E), LRLEQ15AY1(E), LRLEQ20AY1(E)
LRMEQ5AY1(E), LRMEQ6AY1(E), LRMEQ8AY1(E), LRMEQ10AY1(E),
LRMEQ12AY1(E), LRMEQ15AY1(E), LRMEQ20AY1(E)

Contents

1. Preparation before Connection of

Digital Pressure Gauge Kit............................................2

2. Overview of Product ......................................................2

3. Connection Drawing ......................................................4

4. Display Item and Method of Operation ........................7

4.1 Normal ............................................................................ 7

4.2 Abnormal......................................................................... 7

4.3 Manual Operation Display 1............................................ 8

4.4 Manual Operation Display 2.......................................... 13

5. Service Diagnosis ........................................................15

6. The Entire Flow ............................................................16

1

1. Preparation before Connection of Digital Pressure Gauge Kit

When the Digital Pressure Gauge Kit is connected to the outdoor unit, please confirm the software version of
control PCB of ZEAS and you need to change the software if necessary.
∗ Please refer to the manual of software writing delivered.



Check the Software of Condensing Unit

z

Condensing unit: If ver. 91 or earlier, please update the software ver. 93 or later.

z

Condensing unit: ver. 93 and later...You do not need to change the software.

2. Overview of Product



Communicated image

Condensing Unit

Digital Pressure Gauge Kit

7 segment display

Pressure and temperature, detail of running data,

Error code of outdoor unit, software version.

Power
supply line

Control PCB

Communication
line

∗ Power supply line and communication line are included with BHGP26A1.

2



Specification of Digital Pressure Gauge Kit

Outdoor Temp. range –20°C~65°C
Power supply AC200-240V (+10%, –15%) 50/60Hz
Dimensions Height (mm) 268

Width (mm) 286
Depth (mm) 47.5

Casing Pressure gauge box main

body

Hot-dip zinc-coated steel sheets

Pressure gauge (cover) Metacrylate resin
Mass 1.8kg
Location Inside casing of outdoor unit

3

3. Connection Drawing

Wiring drawing

Bind the power supply line
with a clamp together with
the line connected to the
outdoor unit.

Insert the power supply line
into a wire clip together with
the line connected to the
outdoor unit.

Section B

Bundle the redundant length
portion so that the power
supply line or ground wire
will not come in contact with
the conduit.

Digital Pressure
Gauge Assembly

On-site ground
terminal

Bind the power
supply line and
ground wire with
a clamp together
with the line
connected to the
outdoor unit.

Power supply
line

Ground wire

Section B detail view

Insert the communication line into a wire clip
together with the line connected to the outdoor unit.

Bind the communication line with a clamp together
with the line connected to the outdoor unit.

Section A

Bind the communication line with a clamp together
with the line connected to the outdoor unit.

Thermistor

Bind the internal wires
with the large-sized
clamp so that the wires
will not come in contact
with the thermistor.

Ground wire

Power supply line

Communication
line

Label pasting drawing

Gauge window
label

DISCHARGE

SUCTION

Suction pressure
display

20 mm max.

Section A detail view

Be careful not to tense the wire.

Discharge pressure display

Gauge window
label

Resin bush

C: 2P190979

4

Punch out the

knock hole on the

left-hand side.

Knock hole on the front panel



Connection drawing

1. Turn the outdoor unit power OFF.

2. Remove the front panel. (If the model has two front panels (i.e., one each on the left-hand side and right­hand side), remove the panel on the right-hand side only.)

3. Remove the lid of the electrical box.

4. Refer to the and mount the Digital Pressure Gauge Assembly to the panel on the right­hand side.
[Parts used: Digital Pressure Gauge Assembly: 1, M5×12 screw: 2]

5. Secure the ground wire to the electrical box with a screw.
Refer to section B (detail view) in the for the screwing position.
[Parts used: M4×12 screw: 1]

6. Connect the power supply line and communication line of the Digital Pressure Gauge
Assembly to the control PCB (A1P) in the electrical box.

• Power supply line: Connector (white) • X77A

• Communication line: Connector (blue) • X27A
At that time, wire the communication line behind the Digital Pressure Gauge Assembly.
(Refer to section A (detail view) in the .)

7. After connecting the power supply line, communication line, and ground wire, secure the wiring path
according to the .
[Parts used: Clamps: small 6, large 1]

8. Mount the lid of the electrical box.

9. Punch out the knock hole with a diameter of 70 mm on the front panel. (Refer to the mounting dimensions
on the upper right-hand side.)

10.Attach the resin bush to the knock hole on the front panel. [Parts used: Resin bush: 1]

11.Mount the front panel.

12.On completion of installation, turn the outdoor unit power ON and make sure that pressures are displayed
normally.
When figures appear in the discharge pressure display and suction pressure indicate, the product is
working normally.
(Pressure is indicated in the operation switch "OFF or ON" of outdoor unit.)
Abnormal upper section: Error code, Abnormal lower section: LP
Abnormal display case: Please refer to the service diagnosis P.15

Installation drawing

Wiring drawing

Wiring drawing

Wiring drawing

C: 2P190979

5