ERGOMAX® TROUBLE-SHOOTING CHECK LIST
PROBLEM |
PROBABLE CAUSE |
SOLUTION |
No hot water | Boiler does not operate | - Press reset button |
- Check fuse | ||
- Check main cut off switch | ||
Circulator does not operate | - Check power supply | |
Zone valve does not open | - Check power supply | |
Improper setting on aquastat | - Turn aquastat to a higher temperature | |
Electrical problem | - Check relay, fuse and replace | |
- Reset circuit breaker (if applicable) | ||
- Check power supply | ||
- Check all wiring | ||
Inoperative aquastat | - Set aquastat to higher temperature and see if circulator starts to operate. Replace aquastat if needed | |
Air trapped in ERGOMAX tank | - Open pressure relief valve on top of ERGOMAX to let air out | |
Not enough hot water | Aquastat set too low | - Turn aquastat to a high setting & install mix valve |
Demand greater than boiler output | - Check sizing calculation | |
Defective aquastat | - Replace | |
Insufficient boiler output (BTU's) with no priority for domestic hot water |
- Reduce hot water flow rate. Install priority switch. Install mix valve | |
Air trapped in ERGOMAX tank | - Open pressure relief valve on top of ERGOMAX to let air out | |
Water temperature starts to drop | Aquastat set too low | - Set aquastat to higher temperature |
Boiler undersized, no priority for DHW | - Install priority switch | |
Demand for hot water greater than boiler Btu output | - Reduce hot water flow & check boiler/ERGOMAX sizing calculations | |
Water pressure is very high | Install pressure reducing valve. Set to 60-65 psi | |
Water temperature too hot | Aquastat set too high | - Set aquastat to lower temperature |
- Check aquastat operation. (As aquastat is set to lower temperature, circulator should stop.) | ||
Defective aquastat | - Replace aquastat | |
Check mix valve | - Set mix valve to lower temperature | |
- Clean mix valve | ||
Improper plumbing | - Check plumbing against installation instructions | |
Improper system wiring | - Check wiring | |
Sound of rushing water when circulator starts | Air in piping and/or tank | - Open pressure relief valve to let air out. Install air vent on last elbow in piping leading into the tank |
Gurgling sounds in ERGOMAX | Air in tank | - Open pressure relief valve to let air out. Install air vent on last elbow in piping leading into the tank |
Coils making a noise | Air in tank | - Open pressure relief valve to let air out |
Surges of hot/cold water in shower | Shower fixture problem | - Check pressure balancing valve operation |
Pressure relief valve discharges occasionally | Pressure on boiler side too high | - Lower boiler pressure |
- Check pressure relief valve operation | ||
- Check if expansion tank has failed | ||
Pressure relief valve discharges often | Pressure on boiler side too high | - Could indicate coil failure. Call your plumber |
Boiler cycles too often | Boiler high limit set too low | - Set high limit higher |
Electrical wiring | - Check aquastat/boiler control wiring | |
Boiler control | - Check boiler control operation | |
Aquastat | - Check aquastat operation | |
Tank leak | Determine location | - Check tank drain for leak |
- Call your plumber to determine location (aquastat well not tight, pressure relief valve leaking, temp/pressure gauge not tight, tank leak) |
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ERGOMAX Improvements & Buffer Tanks
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