DIAGNOSTIC DISPLAY
By simultaneously pressing the “Mode” and “down arrow” buttons for 3 seconds the unit will allow access to the diagnostic mode.
In diagnostic mode, using the up/down arrow allows for cycling between diagnostic codes. The numeric display will show the diagnostic code for 1 second, followed by the actual measurement displayed for 3 seconds. For example, H01
-105 represents the diagnostic code of “H01” and the value of “105” is the inlet water temperature measurement. The display will continue to show the diagnostic code and the measurement value unless the up or down arrows are pressed to switch to the next item (see Table 4). If no buttons are pressed for 30 seconds the unit will revert back to operation mode where the
|
| Code and |
| Displayed |
|
| |
Diagnostic |
| Measurement | Units |
|
| ||
Description | characters | Meaning | Remarks | ||||
Code | Display | (Example of) | |||||
| (Example of) |
|
| ||||
|
| Format |
|
|
| ||
|
|
|
|
|
| ||
H01 | Inlet Water | H01 – xxx | ºC or ºF | 041 or 105 | 41ºC or 105ºF | ºC LED or ºF | |
| Temperature |
|
|
|
| LED turned ON | |
H02 | Heat engine outlet | H02 – xxx | ºC or ºF | 041 or 105 | 41ºC or 105ºF | ºC LED or ºF | |
| water temperature |
|
|
|
| LED turned ON | |
H03 | Storage tank | H03 – xxx | ºC or ºF | 041 or 105 | 41ºC or 105ºF | ºC LED or ºF | |
| temperature |
|
|
|
| LED turned ON | |
H04 | Heat engine water | H04 – xxx | litres/minute | 056 | 5.6 litres/minute | 1 litre = | |
| flow rate |
|
|
| (1.48 Gallons/ | 0.264 Gallons | |
|
|
|
|
| minute) | 1 gallon = | |
|
|
|
|
|
| 3.78 litres | |
H05 | Fan Speed | H05 - __x – xxx | rpm | 006_511 | 6511 rpm | rpm=rotations | |
|
|
|
|
|
| per minute | |
H06 | Fan Current | H06 - __x – xxx | mA | 001_456 | 1456 mA | mA=milliampers | |
|
|
|
|
| (1.456A) |
| |
H07 | Proportional Valve | H07 – xxx | mA | 178 | 178 mA | mA=milliampers | |
| Current |
|
|
|
|
| |
H08 | Total Heating | H08 – xxx – xxx | hours | 001_234 | 1234 hours |
| |
| Time |
|
|
| (51.41 days) |
| |
H09 | Total Cycles | H09 – xxx – xxx | heating cycles | 000_459 | 459 heating |
| |
|
|
|
|
| cycles |
| |
H10 | Heat Engine | H10 – xxx | KBtu/hour | 100 | 100 KBtu/hour |
| |
| Rated Output |
|
|
|
|
| |
H11 | Current Error | H11 – xxx | N/A | E00 | Proper operation |
| |
| Code (See Fault |
|
|
| - No error |
| |
| Code Table) |
|
|
|
|
| |
H12 – H20 | Error Code | Hxx – xxx | N/A | E28 | Ignition failure | The most | |
| History, From the |
|
|
|
| recent error | |
| Most Recent to |
|
|
|
| corresponds | |
| the Least Recent |
|
|
|
| to H12 and the | |
| (See Fault Code |
|
|
|
| least recent to | |
| Table) |
|
|
|
| H20 | |
H21 | Software | H21 – xxx – xxx | N/A | 002_025 | Software release | For the main | |
| Release Number |
|
|
| number 2.25 | controller board | |
| (CWHCB) |
|
|
|
|
| |
H22 | Software Release | H22 – xxx – xxx | N/A | 002_009 | Software release | For the display | |
| Number (UIM) |
|
|
| number 2.09 | board | |
H23 | Configuration File | H23 – xxx – xxx | N/A | 000_006 | Configuration file |
| |
| Number |
|
|
| number 6 |
|
TABLE 4
www.hotwater.com | 47 |