Amtrol TD-7ZDW manual Trouble Shooting Checklist, Problem, Cause, Solution, No hot water at faucet

8. TROUBLE SHOOTING CHECKLIST

PROBLEM	CAUSE	SOLUTION
1. No hot water at faucet.	1.Boiler does not operate.	1.a. Press reset button on boiler.
		b.Check main cut-off switch.
		c. Check fuse.
	2.Circulator does not operate.	2.a. Check power supply.
		b.Check shaft coupling.
		c. Check impeller for locking.
	3.Improper BOILER MATE™	3.Set BOILER MATE™ temperature to
	setting or calibration.	a higher setting. Call boiler service.
	4.Zone valve does not open.	4.Check power supply.
	5.Electrical problems (relay, wiring,	5.a. Check fuse and replace.
	fuse, low voltage, brown-outs, etc.)	b.Check circuit breaker and
		reset (if applicable).
		c. Check power supply.
		d.Low voltage or brown-out conditions
		can make the boiler control inoperative;
		engage the boiler reset button.
	6.BOILER MATE™ scale	6.If boiler, circulator, and BOILER MATE™
	build-up.	temperature controls are operating
		satisfactorily, the BOILER MATE™ coil
		may have scale coating. Remove coil and
		clean or keep coil in tank and treat with
		a phosphoric acid product (e.g. NuCalgon -
		1-800-554-5499) (Refer to page 20)
	7.Clogged filter (if used) or clogged	7.Clean and replace filter.
	strainer in steam boiler systems.
2. Insufficient or runs out of	1.BOILER MATE™	1.Set BOILER MATE™
hot water at faucet.	temperature setting too low.	temperature control to a higher setting.
	2.Undersized boiler with no	2.Rewire for priority.
	priority to domestic hot water.
	3.Peak use of hot water is greater	3.Determine peak usage and compare tank
	than BOILER MATE™ storage.	volume.
	4.BOILER MATE™ scale	4.Clean coil according to instructions.
	build-up.
	5.Faulty BOILER MATE™	5.Replace control.
	temperature control.
3. Water at faucet too hot.	1.BOILER MATE™ temperature is	1.Lower BOILER MATE™
	set too high.	temperature.
	2.Improper system plumbing.	2.Compare plumbing to installation guide.
	3.Improper system wiring.	3.Compare wiring to installation guide.
	4.Probe out of thermostat well.	4.Check to make sure Probe is properly inserted,
		see Figure 2 Page 8.
4. Boiler cycles more than 5	1.Excessive demand.	1.Reduce demand or consider larger
times per day in summer.		BOILER MATE™.
Boiler runs for longer	2.Damaged or broken BOILER MATE™	2.Replace BOILER MATE™
Periods of time .	temperature control.	temperature control.
	3.Boiler hi-limit set too low.	3.Increase boiler hi-limit.
	4.BOILER MATE™ scale build-up.	4.Clean coil according to instructions.

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