R&D COMBI Series, Service Manual

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i)
阀 B 相通 0.5s，停 0.5s
j)
阀 B-相通 0.5s，停 0.5s
注：负载动作完成后，阀复位一次
门开关检测：将冷藏室门开关接通，冷藏室照明灯点亮，蜂鸣器响开门声音。
2
）显示板自检第一阶段：
接入传感器故障检测，如有接入电阻不符，显示故障代码，同时蜂鸣报警声，
8
秒后自动转入自检第二
阶段；如无传感器故障直接执行显示板自检第二阶段。
显示板自检第二步：
显示图标从左到右，每段依次点亮，间隔时间
0.5s
。其显示顺序如下所示：
冷藏图标、冷冻图标、关图标、负号、 “
8
”字断码按
a
、
b
、
c
、
d
、
e
、
f
、
g
依次显示、童锁图标、摄氏
图标、速冻图标、速冷图标、显示显示板版本号、等待
2
秒显示主控板版本号
显示板自检第三步：按按键时，显示板显示按键值。
A.
冷藏按键
1
B.
冷冻按键
2
C.
模式按键
3
D.
锁定键
4
3
）自检退出
自检进入开始计时，
1
分钟之后退出自检功能，退出自检之后进入正常运行模式 。
Within 3 seconds after being powered on for the first time, press the Refrigerating button and Unlocking button,
and then the buzzer beeps, and enters into the self-inspection mode.
Check the temperature input of each channel. If they are abnormal, the display area of the display panel will
circularly display the fault code.
2) Each load is on and off in sequence.
a) The press signal shall be on for 0.5 seconds, and off for 0.5 seconds.
b) Freezing heater strip shall be on for 0.5 seconds, and off for 0.5 seconds.
c) Refrigerating chamber turning beam heater strip shall be on for 0.5 seconds, and off for 0.5
seconds.
d) Refrigerating fan shall be open for 0.5 seconds, and stopped for 0.5 seconds.
e) Freezing fan shall be on for 0.5 seconds, and off for 0.5 seconds.
f) Refrigerating light shall be on for 0.5 seconds, and off for 0.5 seconds.
g) Valve A shall be interlinked for 0.5 seconds, and stopped for 0.5 seconds.
h) Valve A- shall be interlinked for 0.5 seconds, and stopped for 0.5 seconds.
i) Valve B shall be interlinked for 0.5 seconds, and stopped for 0.5 seconds.
j) Valve B- shall be interlinked for 0.5 seconds, and stopped for 0.5 seconds.
Note: The valve shall be reset once after the load operation is completed.
Inspection for door switch: After the refrigerating chamber door switch is thrown, the refrigerating chamber
light is on, and the buzzer sounds the door open.
2) Phase I of display panel self-inspection
Fault detection of the connected sensor. If the resistance therein is found abnormal, the fault code will be
displayed on the panel and the alarm be triggered to buzz for as long as 8 seconds before the phase II of
self-inspection begins; if the sensor functions well, then the phase II of display panel self-inspection will
automatically starts.
Phase II of display panel self-inspection:
Display icon is lit up from left to right by each section in turn, with interval time of 0.5 seconds. The display
order is as follows: