ECR International Columbia MCC II Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 29 / 32

29
APPENDIX A - CONTROL MODULE
A.6 Boiler High Limit Temperature Controller
When water temperature reaches setpoint, •
controller ends heating cycle.
When water temperature drops below setpoint
•
minus differential, controller restarts heat cycle to
re-heat boiler water.
If water temperature exceeds maximum allowed
•
temperature (220°F or 104°C), controller enters
manual reset lockout state.
For models having reset capability, press any
•
onboard button or cycle power to reset.
A.7 Troubleshooting
Following service procedures are provided as •
general guide.
On lockout and retry models, meter readings
•
between gas control and ignition module must be
taken within trial for ignition period. Once ignition
module shuts off, lockout models must be reset
through key buttons and display. On retry models,
wait for retry or reset at thermostat.
Check for correct installation and wiring before
•
replacing any component.
Control module cannot be repaired. If it
•
malfunctions, it must be replaced.
Use only quali
fi ed service agent to service ignition •
systems.
Perform checkout as fi rst step in troubleshooting.
1.
Check troubleshooting guide to pinpoint cause of
problem. See Table 7 , page 30.
If troubleshooting indicates ignition problem, see
2.
Ignition System Checks to isolate and correct the
problem.
Perform checkout procedure following
3.
troubleshooting guide again to verify system is
operating normally.
A.8 Troubleshooting Error Codes
Integrated boiler control uses advanced diagnostic
capability to assist in troubleshooting error
conditions.
Table 6 page 28 shows codes that could arise on inte-
grated display during fault.
Suggestions are provided in Table 6 for servicing
these potential errors.
Figure 20 - Basic Control Algorithm Example