Test Mode; Compulsion Fc Defrost Mode; Compulsion Pc Defrost Mode; Change The Rotation Speed Of Compressor - Panasonic NR-B53V1 Service Manual

8 Test Mode

Each test mode needs to perform the following procedures in
common.
1. Plug off or power supply off.
2. Power supply on after short-circuiting the appointed
positions.
3. Test mode ends, plug off or power supply off and remove
the short-circuiting points.
8.1.

Compulsion FC Defrost Mode

Compulsion FC defrost: To be making short-circuit of No.75 pin
(TEST 1) and GRD in IC1.
• Normal control the same, without pre-cooling action, FC
defrost mode begins.
• When FC defrost mode ends, changes the normal control
mode.
8.2.

Compulsion PC Defrost Mode

Compulsion PC defrost: To be making short-circuit of No.70 pin
(TEST 4) and GRD in IC1.
• Normal control mode the same, without pre-cooling action,
PC defrost mode begins.
• When PC defrost mode ends, changes the normal control
mode.
8.3. Change the Rotation Speed of
Compressor
To fix the rotation speed of compressor: To be making short-
circuit of No.76 pin (TEST 0) and GRD in IC1. Then press "
button one by one.
Rotation speed of compressor can select definite revel from R1
to R6.
38
"