American Metal Ware Hot Water Boiler
Page 10
IV) Trouble Shooting Auto Refill, Low Water Cutoff, and Dual Level Control System (continued)
PROBLEM | POSSIBLE CAUSE | SERVICE CHECK | REMEDY | ||
|
|
|
|
| |
E) Tank fills with water, | 1) | Thermostat off. | Visual. | Make sure knob is turned fully clockwise. | |
but heat does not come |
|
|
|
| |
2) | Thermostat inoperative | Jumper across thermostat | Recalibrate thermostat. If no remedy, or ther- | ||
on. | |||||
|
| or out of calibration. | terminals causes heat to | mostat does not cycle, replace. | |
|
|
| come on. |
| |
|
|
|
|
| |
| 3) | Power relay or | Check for voltage | If correct voltage, replace coil or entire device. | |
|
| contactor inoperative. | (120V AC) across coil | If not correct voltage, check for loose wires, | |
|
|
| terminals. | improper wiring or other cause. | |
|
|
|
|
| |
| 4) | Low electrode faulty | Jumper from “XL” | Clean electrodes. Check wiring. If still no | |
|
| or covered with lime | terminal to metal | remedy, replace electrode assembly. | |
|
| scale. | enclosure allows unit |
| |
|
|
| to heat. |
| |
|
|
|
|
| |
| 5) | Dual Level Control | Jumper from “XL” | Replace Dual Level Control. | |
|
| faulty. | terminal to “C” does not |
| |
|
|
| cause unit to heat. |
| |
|
|
|
|
| |
F) No water in tank, but | 1) | Thermostat and fill | Visual | Thermostat (brown wire) must be | |
heat comes on (heater |
| valve connected to |
| connected to “HEAT” and fill valve (black wire) | |
damage likely). |
| wrong terminals on |
| to “FILL”. | |
|
| Dual Level Control . |
|
| |
|
|
|
|
| |
| 2) | Electrode(s) shorting | Disconnecting wire | Replace electrode assembly. If no | |
|
| to ground. | (white) from “C” probe | remedy, check for improper wiring (cut insula- | |
|
|
| terminal provides low | tion for instance), or electrode tips touching | |
|
|
| water heat cutoff and | metal inside tank. | |
|
|
| tank fill. |
| |
|
|
|
|
| |
| 3) | Dual Level Control | Heat comes on with no | Replace Dual Level Control. | |
|
| faulty. | probe wires (HI, XL, C) |
| |
|
|
| connected. |
| |
|
|
|
|
| |
NOTE: The level control board works on the principle that water is conductive and with some pure water installations, an increased senseitivity may be required in the level control system. Consult factory if this be the case.
If you still need help, call our service department at (800)
8 am - 6 pm EST) or an authorized service center in your area. Please have the model number and serial number s ready so that accurate information may be given.
Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.
