燃气热水器显示器错误代码及维修

Flue type & Forced type

E1-出水探头短路

E2-出水探头开路 E3-高温干烧

E1-- outlet water temperature sensor short circuit E2-- outlet water temperature sensor open circuit E3-- over temperature dry heating

Balance type

E0—出水探头故障（出水探头开路或短路）

E1—火焰故障（点不着火或中途熄火） E2—伪火（点火前检测到有火焰） E3—温控器故障（温控器断开）

E5—风压开关故障（风机启动前，风压开关闭合或风机运转时风压开关连续2s断开） E6—出水温度过高故障

E8-阀故障（电磁阀线开路或待机时电磁阀得电） EC—通讯故障（主板与面板通信不上）

E0- water outlet temperature sensor defect E1- ignition failed or accidental flame-out E2- false flame

E3- thermostat defect

E4- water inlet temperature sensor defect E5- blower defect

E6- over-temperature protection

E8- valve defect(solenoid valve wire open circuit or the solenoid valve got electricity when the heater is on ready mode) En-20-min timer

EC- communication defect( PC board can not communicate with the temperature displayer)

一）、功能检测

1、将控制板接入检测台，接通电源 将控制板正确连接在检测台上，检测台电源接市电（220V AC/50Hz）。 2、上电，显示屏显示温度42℃；水流量电压5±0.5V；比例阀无电流。

3、①打开水流量，闭合风压，点火，闭合反馈。比例阀，主阀打开，分段阀打开。燃烧正常。按下45℃（85℃）开关键显示45（85）±1℃

②断开风压开关，显示故障：E5 ③按短路按键或拔出水探头插，显示故障：E0 ④拔主阀显示故障：E8 ⑤断开防干烧开关，显示故障：E3

4、进入菜单：按住下降键，上电，显示PP，按下开关键，3S内按下下降键，显示PL。闭合水流量，风机高速运转，闭合风压开关，开始点火，风机低速运转，延时1S 吸比例阀（吸阀电压≥24V），滞后0.5S再吸主阀（吸阀电压≥24V，吸阀时间0.4±0.1S，维持电压≥12V）。

5、点火时间内闭合反馈开关（火焰灵敏度≥5.1M）约1S 内停点火，火焰图标动态显示，进入正常工作状态，PL（比例阀最小电流）：115±3mA，按上升键进入PH（比例阀最大电流）：200±3mA、PI（比例阀点火电流）：140±3mA：FA（气源选择，00是10L液化气，01是10L天然气，03是12L天然气），断电退出菜单。

6、断开电源开关，检测完毕取下控制器，合格产品贴上客户要求的型号标签并盖上QC号流入下工序；不合格品贴上故障现象内容并作好记录，送返工维修。

1. Function detection

A. Plug the PC board to the detecting set with 220V AC/50Hz)

B.Power on, temperature displayer showing 42℃；water flow voltage 5±0.5V；proportional valve no

Voltage.

C. a. Turn on the water flow, close the air pressure, ignite, close feedback switch. Proportional valve, turn on main valve, turn on partial valve. Press 45℃（85℃）， the

b. Disconnect the air pressure, displayer showing E5

c. Press short circuit switch or unplug the outlet water temperature sensor, displayer showing E0 d. Unplug main valve , displayer showing E8

e. Disconnect the Anti-dry heating( 65℃ sensor), displayer showing E3

D. Enter into Menu Setting: pressing on down switch( ▼) and power on, will displaying PP ; then press on/off switch(middle one), and press the down switch( ▼) in 3 seconds, displaying PL. Close water flow, blower fan run high speed; close air pressure switch, start igniting, blower fan run low speed, delay 1 second to absorbing solenoid valve(absorbing voltage ≥24V），delay of 0.5 second then absorb the main valve(absorb voltage ≥24V, absorb time 0.4±0.1S, lasting voltage ≥12V）。

E. In igniting time, close the feedback switch( flame sensitivity ≥5.1M）will stop igniting in about 1 second,

flame dynamic graph displaying normal， enter into normal working state; PL(proportional valve smallest electric current）：115±3mA. Press up switch(▲）to enter into PH(proportional valve biggest electric current）：200±3mA、 PI( proportional valve ignition electric current)：140±3mA; FA( gas type choosing, 00 is 10L LPG, 01 is 10L NG, 03 is LPG NG), power off to exit Menu Setting.

本文来源：https://www.bwwdw.com/article/mb7f.html